May contain spoilers for the game
Tropes applied to the love interests as a whole:
- Bodyguard Crush: By virtue of the plot, the love interests are acting as your bodyguard and you WILL end up falling in love with them.
- Claimed by the Supernatural: All the romance interests put a mark on her to signify her as theirs.
- MayflyDecember Romance: It's never established if ayakashi are immortal, but they can live long enough that individuals can be philosophical about having to wait another thousand years for the next person with "special blood" to be born.
- Mr. Fanservice: All the love interests, full stop.
- Our Demons Are Different: Most of the romance options in this game are ayakashi, or demons. They all have various powers and typically have a human and a demon form.
- Paranormal Romance: The basis of the game is the human protagonist's romance with one of several supernatural beings.
- The Power of Love: Since the more miraculous expressions of the protagonist's power are only available to the one she's entered into an agreement with, this trope will be invoked by name at least once in the main routes and/or sequels.
- Scarpia Ultimatum: Bizarrely enough, it's the heroes pulling the ultimatum, at least at first. In return for one of them acting as her protector, she's expected to have his child, since her newly-awakened power means that any ayakashi child she has will be exceptionally powerful.
- Distracted by the Sexy: The protagonist tends to be frequently distracted by noticing how attractive the love interest of any given route is. In some routes it's an indication that she's finally fallen for the guy in question; in other cases (Yukinojo being a prime example) it happens all along because he's just that sexy.
- Hello, [Insert Name Here]: You choose the main character's first and last name.
- Phlebotinum Girl: People with "special blood" are only born every thousand years or so, which makes the protagonist a tempting target for ayakashi of every rank and moral outlook. Not only will any child of hers be extraordinarily powerful, but her presence alone empowers and heals her ayakashi lover.
- Supernaturally Delicious and Nutritious: The power in the protagonist's blood suffuses her entire being and makes her very appealing to ayakashi. Miyabi's appreciation for the taste of the protagonist's skin is even used to poison him at one point.
Miyabi is an arrogant kitsune,or fox demon. He is the leader of the kitsunes, but is only half kitsune. He frequently gets mocked for that. He loves inari sushi and has a fox form.
Tropes associated with Miyabi:
- Artistic License Animal Care: It turns out to be a moot point since he's hardly a normal fox, but upon encountering Miyabi in his fox form during the prologue, the protagonist feeds him some of her inari sushinote and then takes the apparent wild animal into her bathroom and strips naked in order to give it a bath. Had she done this with a real wild fox instead of a transformed kitsune, it would most likely have quickly become a painful experience.
- The Charmer: Definitely this. He's a huge flirt to the MC and it's implied that he's been with a lot of girls back in his village.
- Death by Childbirth: Miyabi's mother died giving birth to him. Later it's revealed that she was actually murdered by resentful ayakashi.
- Everybody Lives: Played straight on Miyabi's route.
- Kitsune: Miyabi, complete with shapeshifting abilities and trickster attitude.
- Ladykiller in Love: Miyabi's really popular with the ayakashi women back home. The main part of his character development involves getting to the "in love" part.
- Sadist: Has a bit of this going on as well.
- Facial Markings: Miyabi has them in his fox form, letting the player know immediately that - despite the protagonist's assumptions - he is more than just an ordinary wild fox.
- Finger-Licking Poison: Administered through a person, rather than the more traditional book. When the protagonist is poisoned by Nishiki, her skin and blood also becomes poisonous to anyone who might be going for a taste, like her ayakashi lover. Nishiki even tailored the poison to amplify the irresistible scent and taste of the protagonist's blood to make absolutely sure Miyabi would fall for the trap.
- Half-Human Hybrid: Miyabi is the son of a human woman and an ayakashi man.
- Handsome Lech: Miyabi, natch, although a darker variation of the trope.
- Morphic Resonance: Miyabi's fox nature lingers, no matter the form he wears. In the prologue, the narrative calls his human form "Fox Eyes" before he's introduced, and he later shapeshifts into a plush fox toy and a fox statue.
- OOC Is Serious Business: At the end of Miyabi's main route, the other guys are startled when the proud, arrogant kitsune drops the attitude and humbly asks them to help him save the protagonist's life. They take it as proof that he really is serious about her.
- Parental Abandonment: Miyabi has one Missing Mom, one Disappeared Dad, and was raised by his grandfather. His mother was murdered but Miyabi thought it was a case of Death by Childbirth; his father re-appears in the sequel.
- Playing with Fire: In addition to his abilities of shapeshifting and illusion, Miyabi can also create and control blue flames called kitsunebi (foxfire) which are fully capable of burning threats to ash.
- Right Through the Wall: Miyabi's straightforward approach to making sure everyone knows the protagonist is his. Much eye-rolling ensues among the other guys, with the exception of a thoroughly mortified Samon.
- Romanticized Abuse: In their first sexual encounter, Miyabi ignores the notion of consent on the part of the protagonist. He undresses and touches her, while she shakes her head frantically in protest and tells him no/to stop more than once. Their relationship progresses from that point, playing out along the lines of the fantasy of being claimed by a strong alpha male. It is notable that when Nishiki tries the exact same thing later in the route, the protagonist feels only revulsion (as opposed to her strong physical and emotional response to Miyabi), and has a Love Epiphany.
- Trademark Favorite Food: Miyabi shares the kitsune weakness for inari sushi, and the other guys use it against him at one point in his main route.
Chikage is a tengu, or a black winged demon. He is frequently cold and quiet. He constantly seeks power and lived his whole life to become head of the tengu clan.
Tropes associated with Chikage:
- Attention Deficit... Ooh, Shiny!: Chikage isn't mentally ill, but as a tengu he's occasionally attracted to shiny things. Like a jewelry store.
- Blow You Away: Tengu magic specializes in manipulating wind.
- Cosplay: At a festival, several humans think Chikage is doing this thanks to the protagonist intervening to uphold the Masquerade.
- Defrosting Ice King: Chikage hides his many issues behind a veneer of logic and detachment.
- Everybody Lives: Subverted on Chikage's route.
- Evil Former Friend: Magama, the villain of Chikage's route, turns out to have been his best friend when they were children.
- Parental AbandonmentChikage was full-on abandoned as a child, causing him to resort to theft to survive. It's implied Chikage took in Koten to prevent the same thing happening to him.
- Razor Wind: The ayakashi clan that specializes in it is even called kamaitachi. Chikage eventually reveals that he learned the technique as well when he kills Magama.
- Romantic Runner-Up: In the epilogue of Miyabi's story line, Chikage outright asks the protagonist to leave Miyabi and be with him instead. She doesn't of course. Miyabi doesn't hold a grudge over it.
- Self-Made Man: Unlike the other love interests, who were born to their roles as clan leaders, Chikage worked his way up from nothing.
- Sugar-and-Ice Personality: Chikage presents an aloof, unemotional front to the world, rebuffing the protagonist's early efforts to get to know him. Even after he begins to fall for her, it's not readily evident in his behavior except to people who've known him for a long time, who point out that he's becoming softer and more approachable under the protagonist's influence.
- Tengu: Chikage, though he lacks the long nose which is characteristic of tengu in folklore (this is a romance game, after all). When the protagonist comments on it, he replies that tengu having long noses and red faces was an invention of human folklore.
- Winged Humanoid: Chikage, identifiable as a tengu by his feathery black wings. In the prologue, the protagonist has the opportunity to mistake him for an angel.
Shinra is an oni, or a horned demon. He is hot headed and passionate. His goal is to replace his older borther as head of the clan.
Tropes associated with Shinra:
- Affectionate Nickname: Is referred to as "little oni" all the time.
- Cain and Abel: Shinra and his older brother.
- Childhood Friend Romance: On Shinra's main route, one appears to blossom between the protagonist and library regular Taira. Until it's revealed Taira had overheard the protagonist telling her co-worker about her first love, and used the information to pass himself off as that boy. The actual Childhood Friend Romance is between the protagonist and Shinra.
- First Love: Shinra and the protagonist knew each other as children, and were each other's first crush.
- Get a Hold of Yourself, Man!: The protagonist pulls this on Shinra during his sequel, complete with a smack to the face.
- Inconsistent Dub: Shinra has been called a demon, ogre, and oni, although not at the same time.
- Moment Killer: Shinra and the protagonist tolerate a deliberate invocation of this trope during his route.
- Oni: Shinra is an oni (translated in the English-language release as "demon"). He's first seen in the prologue complaining about how oni are villainized in folk tales like that of Momotaro; he's blunt, brash and a little violent, but good-hearted.
- Red Oni, Blue Oni: Shinra is an actual red oni, with everything that implies about his temperament. He is quite literally this to his older brother Taira, whose colour scheme is shades of blue. Slightly subverted by the fact that while Shinra fits the Red Oni character traits, Taira isn't as cool-tempered as we're lead to believe.
- Sarashi: Shinra in his oni form wears sarashi under his loosely-tied, barely-on kimono, visually denoting him as a physical fighter and a bit of a thug.
- Took a Level in Jerkass: Shinra, in his sequel. The entire story arc is based around the why and the resolving of it.
- Trademark Favorite Food: Shinra is all about the dango. Mitarashi dango for preference.
Kyoga is a werewolf, or a wolf demon. He is a natural flirt and is the head of the wolf demons.
Tropes associated with Kyoga:
- Chivalrous Pervert: Kyoga talks a good game, and even claims to be a literal representation of the adage "all men are wolves". He's a gentleman at heart, however, and refuses to do anything his current partner is not 100% up for, even if it means fighting off moon-induced instincts all the way.
- Dream Stealer: In Kyoga's "A Poem From Him" side story, the protagonist runs afoul of a Baku that has already rendered several ayakashi comatose by eating their dreams.
- The Nose Knows: Kyoga, being a wolf spirit, has an excellent sense of smell and claims to be able to track anyone he's ever met by scent alone.
- Playing with Fire: Kyoga is shown to complement his martial skills with fire powers.
Yukinojo is a yukibito, or a snow spirit. He starts out as a kind hearted gentleman, but becomes very cold after you choose him.
Tropes associated with Yukinojo:
- Absence Makes the Heart Go Yonder: Yukinojo fell in love with a human, but had to return to his own world for a while. He promised to come back for her, but since he didn't truly understand how different human and ayakashi lifespans are, he didn't return until several decades later. By then, the girl had not only moved on, but also married and started a family.
- An Ice Person: Comes with being a snow spirit. His skin is even cold to the touch.
- Elemental RockPaperScissors: Snow spirits like Yukinojo have an aversion to heat and fire. Burn injuries continue to spread long after the source of the burn is gone, and can be enough to kill them.
- Flower Motifs: The protagonist's knowledge of hanakotoba leads to an epiphany on Yukinojo's main route. Yukinojo's first love gave him a violet when they parted. Violets symbolise loyalty, so the protagonist concludes that though the girl eventually moved on, she never forgot about Yukinojo.
- Meaningful Name: The "yuki" in Yukinojo's name means "snow."
- Thermal Dissonance: The second thing the protagonist noticed about Yukinojo was how impossibly cold his hands were (the first thing she noticed was how beautiful he was). Indeed, humans who touch Yukinojo tend to assume he's ill, while his friends just take care to keep him away from any food they don't want accidentally frozen.
- True Love's Kiss: Justified on Yukinojo's route, since this is how the protagonist's powers work. Since she never had her powers explained to her on this route, however, she's startled when she kisses a dying Yukinojo and he wakes up, healed and well.
Samon is a zashiki-warashi, or a house spirit. He is not a clan head of any kind.
Tropes associated with Samon:
- Barrier Warrior: Energy shields are one of the primary powers of the zashiki-warashi, befitting house spirits whose role is to protect their chosen home. Samon has been using this power to protect the protagonist since she was a teenager.
- Beware the Nice Ones: Samon. When pushed he's the only one to physically manhandle any potential rivals among the other LIs, and when irritated he can quickly cow them with a look even though they all outrank him. His fight with the villain of his story line is also one of the shortest.
- Healing Hands: Healing is one of Samon's powers as a zashiki-warashi.
- Paper Talisman: Samon's arsenal includes ofuda that have thus far been used to power up his barrier. Quite appropriate both for a house spirit and someone whose human identity is a Shinto priest.
- Zashiki-warashi: Samon turns out to be one.
Kiryu is a dragon. He's an aloof loner. He is the heir to his clan and forces you to make the agreement with him.
Tropes associated with Kiryu: