A girl named Yuki discovers a mysterious watch that stops time—and uses it to save a boy, Hiroki, from certain death. Drawn together by the secret of the clock, the two find themselves bound by an unforgettable summer. In a world frozen in time, an unprecedented suspenseful romance begins! (Source: Manga Plus)

In the 23rd century, humans use mindless organic robots called Gijin to do their every bidding. But when an escaped military Gijin named Marie frees herself from human control, it becomes clear that the Gijin aren’t so mindless after all. She vows to make a world where all Gijin are free, and there’s only one way to do that—to kill all humans! *Source: VIZ Media*

Akadacho is a rural town surrounded by mountains on all sides. Shiori Nakagawa is suppose to be a student at the high school in town, but he has been skipping school because of bullying. One day, Mei Sato moves into Shiori's house as a renter. The normally reticent Mei tells only Shiori the true purpose of her visit to this town. *"I want to kill the seven people who forced my sister to her death."* Three years ago, Mei's older sister Akari was bullied so severely in this town that she took her own life. Mei has returned here to avenge her death. She plans to kill the seven bullies by performing a bloody ritual called "Okakashitsumi," a tradition at the Akada Shrine, to summon the spirit of the snake god "Okakashi-Sama" into her body. On the night of the summer solstice, Mei succeeds in the ritual. One by one, she and Shiori, with the help of the god's powers, kill the people involved in her sister's death. During their days of revenge and escape, the two develop romantic feelings for each other. However, Mei is hiding something from Shiori. The person who performs "Okakakatsutsumi" must offer her soul to the god in exchange. In other words, "Mei's death" is inevitable. (Source: Shogakukan, translated)

Kazuto is a bullied boy and Aki is a girl with an incurable disease. They meet at a hospital in a town surrounded by ruins, and begin a small "rebellion" against the bullies and against the world. (Source: Shonen Jump Plus, translated)

The girl dedicated her life to avenging the seven people who killed her sister. Akada Town, a rural area surrounded by mountains on all sides. Nakagawa Shiori, a high school student in this town, had stopped attending school due to bullying. One day, Mei Satou comes to live with Shiori as a cohabitant. Mei, who doesn’t open her heart to anyone, reveals her purpose for coming to this town only to Shiori. “I want to kill the seven people who drove my sister to her death.” Three years ago, Mei’s sister, Akari, was subjected to horrific bullying in this town and took her own life. Mei has returned to exact revenge. She plans to perform the blood-soaked ritual ‘Okakashitsutsumi,’ handed down at Akada Shrine, to embody the giant serpent god ‘Okakashisama’ and kill the seven people involved. On the night of the summer solstice, Mei successfully performs the ritual. From that point on, with the power of the god and together with Shiori, Mei begins to kill those involved in her sister’s death, one by one each day. Amid their days of vengeance and escape, the two eventually develop romantic feelings for each other. However, Mei keeps one secret from Shiori: anyone who performs the ‘Okakashitsutsumi’ must ultimately offer their soul to the god, meaning Mei’s own death is inevitable. https://www.cmoa.jp/title/332705/

They say that every great man in history had some kind of fetish. Some establishment seriously thought that; "If we gather every person with an extreme fetish, we can breed geniuses, right?" Itou Manami is a new teacher assigned to be the homeroom teacher of such class. How will he handle such problematic students?

When he was in 6th grade, a boy had his first kiss with his older cousin, whom he had a secret crush on, and he has never been able to forget that memory. Eventually, he goes on to high school and meets his cousin again, who is now a college student... (Source: Gagaga Bunko, translated)