SatsukoThe angel who is the main character's guide to high school.
- Blatant Lies / Paper-Thin Disguise: A girl from Sweden named Satsuko? Sure, why not? It doesn't help that she mistakenly says she's from Switzerland once on the first cycle.
- Slowly becomes a rather competent disguise the more cycles the player goes through till about 5 where it's damn near perfect. Although, even in the final cycle the main character still has to remind her that's she's pretending to be his cousin, and thus probably shouldn't be hitting on him in public.
- Guardian Angel
- Our Angels Are Different
- Plot Twist Is a bit of Kasumi that died the first time she attempted suicide.
- Time Travel: She's a guardian angel that sends the main character back in time to suck less.
Voiced by: Stephanie ShehThe main character's first friend who doesn't like school and is a huge fan of manga and sci-fi. Seems to have a bit of a crush on Hiroshi, or at least to look up to him.
- Achievements in Ignorance: Her sci-fi stories are apparently very close to the real conspiracies underlying the town.
- Beauty Equals Goodness: Aya invokes this in one of her ideas for a manga.
- Cloud Cuckoolander
- Genki Girl
- I Just Want to Have Friends: It's revealed in her path that she really wants to be popular, have everyone be her friend, and take her seriously.
- Jerkass: Shades of it.
- No Sense of Humor: In the sense that all her jokes are either bad or offensive. Sometimes both.
- Red Oni, Blue Oni: Red to Kiku's blue.
Voiced by: Carrie KeranenA wealthy friend of Aya's who is part of a powerful family. She is part of the Ikebana Club and enjoys dancing.
- Cool Big Sis: Towards the other girls. Notably, she's the one who thanks you for giving several of them a White Day present.
- Hime Cut
- Lethal Chef
- Lonely Rich Kid
- Multiple Endings: Most of her big scenes also involve Aya in some way, and since it's easier to gain Aya's approval with lower academic scores, this generally means that her ending comes after Aya's (each ending can only be seen once). However, it is possible to get hers before Aya's. Conversely, with more playthroughs, as one's academic scores go up due to better stats, she's usually the first one to fall in love with the main character.
- Red Oni, Blue Oni: Blue to Aya's red.
Voiced by: Julie Ann TaylorAn American exchange student who loves playing and listening to music.
- Crutch Character: Not in the traditional RPG sense, but her lack of knowledge of Japanese culture means that she gets scenes even when the main character's scores are very low. Additionally, the annual Culture Festivals are an easy way of gaining her approval.
- Foreign Exchange Student: From America.
- Red Oni, Blue Oni: Blue to Hiroshi's red.
- Values Dissonance: Mentions the possibility of getting a tattoo (Not well thought of in Japan). Hiroshi is appropriately horrified.
Voiced by: Laura BaileyA sweet caring woman who had traveled all over the world. She really loves to cook and invent recipes - even if she isn't good at it.
- Friend to All Living Things: Even baby kaiju.
- Lethal Chef: When she tries to cook something from a recipe she makes herself.
- My Beloved Smother: To Kazuki. Subverted, as she is Kazuki's sister.
- Shipper on Deck: For Kazuki and Suzu.
Voiced by: Michael SinterniklaasNaoko's little brother who loves fixing things and is really smart.
- Cloudcuckoolander's Minder: He's the one who has to keep Suzu from inventing something that might actually hurt people. Or trying to change her underwear in public.
- Gay Option: Explicitly stated in his ending that he and the main character are more than friends.
- Hikikomori: Becomes one in his ending arc.
- Hopeless Suitor: Towards Kiku. When she finds out in his ending, she's sympathetic, but treats it as a Precocious Crush.
- I Just Want to Have Friends
- Intelligence Equals Isolation: Is arguably the smartest person in the cast, and at the start has no real friends besides Suzu.
- Vitriolic Best Buds: With Hiroshi. Despite professing to not like him, they're usually joined at the hip.
Voiced by: Jason GriffithRena's overprotective older brother. He is a genius and a self proclaimed 'ladies man'. He's into athletics and Naoko.
- The Ace
- Big Brother Instinct: He is quite protective of Rena.
- The Blind Leading the Blind: Offers to teach the main character how to talk to girls, a skill he never demonstrates with any competence. Surprisingly, it works as an action upgrade.
- Chivalrous Pervert
- Favouritism Flip Flop: Especially where Naoko is concerned.
- Gay Option: Though his route isn't explicitly romantic, Satsuko will report on his romantic affection for the main character increasing like everyone else.
- Insufferable Genius
- Jerkass: Especially in his storyline, where he forms a club to allow the guys at school to peep on the girls' locker room, even though his own sister is changing there.
- Red Oni, Blue Oni: Red to Alice's blue.
- Sore Loser
- Smug Snake
Voiced by: Carrie KeranenHiroshi's little sister who believes in the supernatural and talks about strange things.
- Cloud Cuckoolander: She and Aya don't get along despite their similarities.
- Ditzy Genius: Rena may be a ditz, but she's had several scholarships offered to her because of her writing and art skills.
- Have We Met Yet?: Probably the only case where the main character can phone someone before they actually introduce themselves and have them NOT think he's creepy. If main character gets her phone number and calls her at the start of a new cycle, not only will she know who he is already (to HIS surprise), he can actually tell her the truth and she won't be the least bit fazed by it.
- What Do You Mean, It Wasn't Made on Drugs?? Everything about her. Mostly her ending.
Voiced by: Laura BaileyA really smart girl and a friend of Kazuki's who makes a habit of making inventions out of junk.
- Artificial Human
- Cordon Bleugh Chef: Though apparently beef, octopus, and garlic pizza isn't that bad.
- Gadgeteer Genius
- Innocent Fanservice Girl: Doesn't seem to get why the dumbwaiter to the girls' locker room is a big deal or feel the least bit awkward if given underwear for White Day.
- Small Girl, Big Gun: In a CG.
- Token Mini-Moe
- Wrench Wench
Voiced by: Stephanie ShehA shy, mysterious girl who keeps to herself.
- Dead All Along
- Eating Lunch Alone: Seems to be a habit of hers. She even gets up and runs if all three male characters agree to try to make her laugh, if the main character isn't good enough friends with her already.
- Loners Are Freaks
- Mysterious Past
- Rescue Romance: If the main character's sports stat is high enough for the event that triggers the second loop.
- Shrinking Violet
Kasumi KusanagiA depressed girl who thinks about deep things and feels that no one understands her.
- Brilliant, but Lazy / Book Dumb: Subverted. Kasumi is rather intelligent, but tends to bomb her tests because she simply doesn't see them as important.
- Driven to Suicide Happens in every route but her own.
- Golden Ending Her path is the very last path. Satsuko will even instruct the main character not to bother with this one until he completes the others.
- Insufferable Genius
- Loners Are Freaks
- Jerkass Woobie: She starts off as a very abrasive, unfriendly character. However, the more you learn about her as the cycles progress, the more sympathetic she becomes.