12-sai.: Chicchana Mune no Tokimeki

When the intimidating Rintaro meets the open-minded Kaoruko, the unlikely duo grows closer. The issue? Their neighboring high schools hate each other.

For Makoto Hanaoka, life’s about to get more complicated. Saki Aoi, a lively girl with loads of confidence, confesses her love for Makoto one day. When he fails to reciprocate, Saki declares she will be his first love! She shares her goal with a mutual friend, Ryuji Taiga, who also confesses his crush on Makoto. Stuck in a love triangle, Makoto must find a way to make it work and have fun.

Weighed down by memories she can't shake, high schooler Koyuki Hikawa keeps everyone at arm's length — until three schoolmates draw her out of her shell.

After middle school, with its bullying and nicknames, Uka Ishimori is excited for a fresh start at Hachimitsu High School. Kai Miura, a cool and uninhibited boy, sits next to her in class. Uka remembers she met Kai in middle school and with a single word, he had convinced her to attend Hachimitsu. Though he’s popular, Kai supports Uka in her efforts to fit in with her new classmates.

This story is about a girl, Candy, who is a orphan. She is a nice and optimistic girl and she has a warm heart. When she was a child, she lived in an orphanage called Pony's Home. She had a good friend called Ann. And she met the "handsome boy on the hill" who is a important person in her life, on the hill behind the orphanage. She was adopted by the Loka's family. What's awaiting her are the bad-hearted Leo and his sister, Eliza. One day, in the rose garden, she met a boy, who is identical to the "handsome boy on the hill" who she had met in her childhood. The boy is called Antony. Thereafter, a fantastic story that she has never expected begins.

Shuichi Nitori transfers to a new elementary school, and there, meets Yoshino Takatsuki. The two children discover they share a similar secret.