Suika

Suika is a somewhat unique visual novel split into intertwined stories over a two week time period in a small village. The first chapter stars Kazuma Akira and his return to the town where he briefly went to school. He meets a miko who turns out to be one of the two friends he made when he was living there. There are constant flashbacks detailing the time the two went to school together along with Itsuki's sister Sayo and the growing love triangle between them

The second chapter is about Kamishiro Souji and the relationship between him and the local father and daughter artists Shirakawa Ritsu and Sayaka. Ritsu's art is rather disturbing and so is his normal manner. It also has an alternate route involving side character Wakabayashi Mie after the True Ending of the VN is achieved.

The third chapter is about the love triangle between Touko and the Misaka siblings, Akane and Yoshikazu. Touko is intensely devoted to Yoshikazu, but also extremely jealous of any of his relations with absolutely anyone else. Especially his non blood related little sister Akane, towards whom he has a secret attraction which isn't helped along by her rather suggestive behavior.

The fourth and final chapter is the one that finally returns to the first protagonist Inaba Hiroshi. The story also addresses the little silver haired girl with red eyes, black clothes and a small black cat doll. Who is she, and why does she keep acting so strangely when people notice her? And if she wasn't trouble enough, Hiroshi's father is dying and his sister has a potentially fatal heart condition and is scheduled for a surgery soon.

Adapted into a Hentai and released in the U.S. as Wet Summer Days, which focuses on the first, second, and fourth episodes of the game.

No relation to a certain oni. Nor a watermelon. Compare Ef a Fairy Tale of The Two, a game by the same creators with a similar setup.

This story provides examples of:
 * Abusive Parents: Itsuki's parents probably deserve some kind of award.
 * Angsty Surviving Twin: Itsuki.
 * Angst What Angst: In-Universe. Sayaka, probably best illustrated in the scene where she makes friends with Mie, who is horrified at how the town treats her despite how kind she is.
 * Broken Ace: Souji is good at essentially everything and a complete chick magnet (random people coming up to him and trying to kiss him isn't something entirely unexpected for him) but has a personality which is about half facade.
 * Brother Sister Incest: Touko's biggest worry in the third chapter because they're Not Blood Related, so it's okay!
 * Chick Magnet: Souji
 * Clingy Jealous Girl: Touko
 * Convenient Coma: get out from hers just at the end of the chapter.
 * Dead All Along:
 * Different As Night and Day: Itsuki and Sayo.
 * Downer Ending:
 * Driven to Suicide:
 * Dysfunction Junction: Most of the cast has some severe issues, though there are a few examples. Chapter one is probably the worst about it.
 * Failure Knight: Archimedes. Yes, the cat.
 * Feminine Women Can Cook: Sayaka gets irritated because Souji is a much better cook than she is.
 * Footnote Fever: Names of Japanese holidays, foods, religious ideas, etc. are often left untranslated in the Mangagamer translation, with a note to look up what it means in the included .pdf translation notes file.
 * The Gadfly: Akira in high school, which was apparently what attracted Sayo to him.
 * Knife Nut: Souji always carries a silver knife in his pocket
 * Literal Split Personality:
 * Little Sister Heroine: Akane really plays it up.
 * Lolicon: Oujo refuses to change unless Hiroshi is in the room with her, leading to a very predictable misunderstanding when Kako walks in.
 * Love Makes You Evil:
 * Love Triangle: Several, but most prominent in the first and third chapters.
 * Love You and Everybody: In Sayaka's alternate route, she asks Souji if he likes Mie. Of course he does! It's not until noticing her irritation at his misunderstanding that he realizes she meant romantically. If you're playing the Mie version of this route, he can't come up with a proper answer.
 * Matchmaker Crush: Akane
 * Miko: Itsuki, the daughter of the priest.
 * Mind Control Eyes
 * Misunderstood Loner With a Heart of Gold:
 * Murder the Hypotenuse:
 * Multiple Endings
 * Nice Hat: Ojou refuses to remove it
 * No Export for You: Averted with Mangagamer's official localization in 2009.
 * Non Human Sidekick: Archimedes
 * Not Blood Related: Akane and Yoshikazu.
 * The Pollyanna: Sayaka is very well adjusted considering the entire town seems to hate her and her father
 * The Power of Love:
 * Red Eyes Take Warning: Averted. Ojou is probably the sweetest and most innocent character in the story
 * Set Right What Once Went Wrong:
 * Shinigami: Ojou
 * Sibling Triangle: A rather unpleasant variant that ends with
 * Sibling Yin Yang: Sayo and Itsuki both fell in love with Akira
 * Stepford Smiler: Souji and Mie
 * Title Drop: In the true ending
 * Token Mini Moe: Ojou
 * Tomato in The Mirror:
 * Tomboy and Girly Girl: Sayo and Itsuki
 * Twist Ending:
 * Victorious Childhood Friend: Sayaka,
 * White Haired Pretty Girl: Ojou. The hair color is noticed in story but mostly shrugged off with the assumption she's a foreigner
 * Yamato Nadeshiko: Touko tries, but she's a little... creepy.
 * Yandere/Cute and Psycho: