* TheAlcoholic: Ayato developed a drinking problem after he and his brothers discovered that they [[spoiler:raped her.]]

* AdaptationalAngstUpgrade: The story isn't so kind towards Yui. Being raped, having her children from this, her daughters being held captive unless she goes to a birthday party, and then having to meet her abusers/rapists again after twelve years is clearly taking a toll on her mental health.

* TheAlcoholic: Ayato became this after he and his brothers discovered that they [[spoiler:raped her.]]

* BrokenBird: Yui is this in the story. Even after accepting her children and be a good mother to them, it doesn't erase the emotional scars she got from her children's fathers.

* ChildByRape: All of Yui's children are this. However, she loves them regardless of this.
* ChildrenAreInnocent: The younger kids had yet to understand things such as how babies are made.

* CheerfulChild: Some of the kids are this. [[spoiler:Justified, because they have a much warmer childhood under their mother's care, unlike most of their fathers.]]

* GenerationXerox: Subaru noted that he and his son, Hayato, are very similar to each other. As they both have mothers who were raped by their fathers and them being born out of this horrible act with their beloved mothers having their sanity being slipped away from being raped.

* GenerationXerox: Subaru noted that he and his son, Hayato, are very similar to each other. As they both have mothers who were raped by their fathers and them being born out of these horrible acts with their beloved mothers having their sanity being slipped away from being raped.

* GenerationXerox: Subaru noted that he and his son, Hayato, are very similar to each other. As they both have mothers who were raped by their fathers and them being born out of this horrible acts with their beloved mothers having their sanity being slipped away from being raped.

** Like in canon, Karlheinz enjoys messing with his sons' lives. [[spoiler:He placed a drug in the boys' drinks in which it caused them to rape Yui, which she ran away from them.]]
** Sejij tried to killed Yui when they met again. The reason was because he said that she was possessed by a demon.
** [[spoiler:Yui was this for a week when she had her eldest son, Yuuta, to due the fact that she had him after she was raped. Fortunately, she got her act together and became a loving mother to him and his siblings.]]

* AdaptationalNiceGuy: Surprisingly, Laito of all people has this after Yui left. Granted, he still has some of his old traits but he's still nicer when Yui first met him.
* AdultFear: Yui face this when her daughters, Momoi and Airi, go missing. It doesn't help that they went to the Sakamaki mansion in order to find out about their mother's past with the Sakamaki family and are staying there until she goes to Subaru's birthday party.

* BigBad: Karlheinz is this like in canon.

* CosmicMotifs: The Chatpers' names have moon ones. Chapter 9 has the title 'The Moon and its Stars', which it's an information chapter on Yui's children.

* {{Dhampyr}}: All of the kids are this.

* FriendToAllChildren: [[spoiler:It's reveals that Laito has a fondness for children. This actually helps him bond with his little niece, Airi, rather quickly.]]

* HalfSiblingAngst: Averted. None of the kids feel this. They're all shown to have close relationships with each other. Even when some of the younger siblings is shown to annoyed their older siblings, they all care about each other.
* HateSink: Karlheinz. Like in canon, he enjoys destroying the lives of others, including the ones of his family, for his Adam and Eve Project. It's no wonder his sons hate him more than anything now since he caused them to raped Yui, the human girl they all love.

* IllGirl: Yui is this sometimes.

* TheLostLenore: Yui is this to the fathers of her children. While she's not dead like other examples, her disappearness did left holes in their lives and all of them regretted how they treated her.

* MasqueradeBall: Subaru's birthday party is this. Yui and her son, Hayato, are invited to it. Both to get Yui's two daughters back and for Hayato to finally meet his father. Although, Hayato is unknown about the latter, and only thinks that he and his mother are just going to a party and just picking his older sisters up.

* MeaningfulName: Several of the kids' names have very well meaning in them.

* MyGodWhatHaveIDone: The boys' reaction when Karl had told them what did they do to Yui that night.

* RapeLeadsToInsanity: Zig-zagged. While Yui suffers from PTSD after being rape that night. This still goes on after all these years. However, she's trying to be strong for her beloved children.

** Someone who went through a traumatic event will have develop PTSD, sometimes for a life time.
** Even when an abusive person will become remorseful towards their actions and wants to apologize to a person they wronged, that person won't forgive them so easily and might not want ever see that abusive person.
* ReallyGetsAround: Subverted. Despite what the other parents say, Yui only had her 22 children because she was raped but she keeps this quiet out of fear for her children.
* RelatedInTheAdaptation: Adam is the son of Ruki Mukami instead of Shin Tsukinami in the first latter's Brutal Ending in ''Dark Fate''.

* SlutShaming: Yui gets this treatment from the other parents due to having many children who don't resemble each other much.
* StrugglingSingleMother: Yui actually has a good job in a diner where she and her children live above. However, her mental health cause her to be very fragile at times.

* VampireDance: The masquerade ball is this. All the guests are vampires.

* WhiteHairBlackHeart: The Vampire King Karlheinz is this. As usual, he has no remorse what he does for his Adam and Eve Project no matter what. That includes the lives of his family, his sons, adoptive sons, and couins-in-laws are all victims of his plans along with their love interest Yui and their illegitimate children.

* DotingGrandparent: Karlheinz is very friendly towards Momoi and Airi during their stay at the mansion. However, Momoi, understandably, doesn't trust him since he told her the horrible truth of hers and her siblings' births. See GruesomeGrandparent below.

* HalfSiblingAngst: Averted. None of the kids feel this. They all show to have close relationships with each other. Even when some of the younger siblings is shown to annoyed their older siblings, they all care about each other.
* HateSink: Karlheinz. Like in canon, he's enjoys destroying the lives of others, including the ones of his family, for his Adam and Eve Project. It's no wonder his sons hate him more than anything now since he caused them to raped Yui, the human girl they all love.

* KidsAreCruel: The Komori siblings have been mad fun of by the other children because they don't have a father with them like their classmates.

* ParentalAbandonment: Seiji disowned Yui before the events of the story do to believing she was possessed by a demon.

* DotingGrandparent: Karlheinz is very friendly towards Momoi and Airi during their stay at the mansion. However, Momoi, understandably, doesn't trust him since he told her the horrible truth of hers and her siblings' births. See GrusesomeGrandparent below.

* DotingGrandparent: Karlheinz is very friendly towards Momoi and Airi during their stay at the mansion. However, Momoi, understandably, doesn't trust him since he told her the horrible truth of hers and her siblings' births.

* GruesomeGrandparent:

* GusomeGrandparent:

* GrusomeGrandparent:

* AliensMadeThemDoIt: