After her mother remarries a divorced man, high school student Kanzaki Mitsuki acquires an older stepbrother, Yuuya. Unfortunately, when Mitsuki's stepfather is transferred overseas and her mother follows him, she is compelled to live with Yuuya. Mitsuki feels isolated and estranged from her stepbrother, making it difficult for them to communicate with one another. One day, a ghost/angel named Hiyori appears and possesses Mitsuki's body. Hiyori is the deceased spirit of a girl who died before she could reach heaven and now seeks inner peace. Using a belt called TST, she tracks Mitsuki's sexual experiences with Yuuya, from dates to sex, and each time the belt fills up; she moves closer to heaven. To expel Hiyori's presence, Mitsuki must take daring and potentially unorthodox steps with her stepbrother.
A run-of-the-mill student stumbled upon a vampire by chance and ended up becoming their neighbor without any prior plans. However, they were completely unaware of the fact that this unforeseen meeting would lead them down a path of mysterious stories. Is it even possible to determine if one's neighbours are genuinely human?
Kenji and his younger sister Yasuko lost their parents in an accident a decade ago. Kenji used to be the leader of a gang, but he took up shojo manga to provide for himself and his sister. His manga character is mild-mannered and bespectacled, yet when he needs to shield Yasuko from peril, he discards his glasses and unleashes his violent side.
1. Hen Koi no Specialist 2. Oyasumi Manatsu no Gatsu 3. Koi no Jitsuryoku Ai no Sainou 4. Dokusen Happiness
1. Ouji-sama wa Midara ni Midareru. [Kayoru] 2. Yume-iro Button [Hoshimori Yukimo] 3. Aku no Kuchizuke [Cocoro Ayumi] 4. Konna Abunai Kyori (Such a Dangerous Distance) [Chiba Kozue] 5. Amai Tameiki: Binetsu Jikan [Shiraishi Yuki] 6. Sensei to Naisho no Gohoubi Kiss [Oogi Sae] 7. Horeta Mon Make! [Hanamoto Asami] 8. Nande Watashi ni Kiss shita no? [Fujinaka Chise] 9. Mofu☆Mofu [Kitamura Satoko]
Saki Ogura, a lone-wolf delinquent, is determined to rise to the top of the high school. But her plans are disrupted when she's approached by the class's most popular girl, Yuka Oguri. Though Saki finds Yuka annoying at first, a strange turn of events leads to Yuka discovering Saki's secret weakness—she's extremely ticklish!?
Tsubaki Mochizuki, an omega and captain of the school's judo team, regularly clashes with alpha karate captain, Ruuji Ishio, in their shared gym. However, a heated argument leads to a joint punishment and a warning from Ishio. He cautions Mochizuki to be wary of his omega pheromones and confesses his attraction towards him as an alpha. Despite protesting, Mochizuki wants nothing to do with Ishio after feeling belittled by him. Mochizuki plots revenge and chooses to sexually harass Ishio, unaware of his true feelings. However, danger lurks around the corner, and there are greater threats to Mochizuki beyond Ishio's attraction.
High school is home to all kinds of new encounters and people, but for Renge Ooyama, her first encounter with a classmate was much weirder than she expected. When Renge meets her classmate Sumire Yotsuya, the latter is clearly not the 16-year-old student she claims to be, but instead is a wooden puppet operated by an old man dressed in black. Though the students and faculty attempt to ward off the man, he refuses to break character and only gives confused responses from the puppet Sumire. Thanks to the principal seeing Sumire as a real girl, teachers and pupils alike must accept this new and odd student as the normal person "she" claims to be. Now classmates with Sumire, Renge is creeped out when "she" insists they hang out and become friends, and worries how it might affect her reputation at school. However, when Renge falls into trouble, it's none other than Sumire who comes to her aid. Finding that Sumire (and the old man) aren't so bad after all, she decides to give "her" a shot. Sumire♡16-sai!! follows Renge and her schoolmates as they attend school with this masquerader and come to realize that despite the wooden body, Sumire's heart is certainly real.
At Oujibaru High School, Tsukiyono Mayoi is a 16-year-old second-year student and member of the Library Committee. When she's around her crush, Amagi Haru, she slips into a clingy "little devil" persona - not because she wants to, but because her lack of confidence and unimpressive appearance leave her feeling insecure. Thus, the tale of a plump girl who can't seem to shake her devilish facade begins.
For over a decade, Yuuki and Natsuha have been close childhood friends, currently studying in their third year of high school. As they prepare to graduate, they face the possibility of attending different universities. Though they have recently started a romantic relationship, the shift from friendship to love can be difficult for anyone, especially them.
Mika, a regular high school student, yearns for a blissful romance. Fate intervenes when she crosses paths with Hiro, the man meant for her. Although situations that cause heartache occur, Mika cherishes the moments she shares with Hiro as the happiest times of her life.