List of episodes of the series «12-sai.: Chicchana Mune no Tokimeki»
- Seasons count: 2
- Episodes count: 24
- Total viewing time: 14 h. 24 m.
Release date: 4/4/2016
Kiss. Hate. Love.
- Episode number: 1
- Episode duration: 24 min.
- Episode description: Finally, Hanabi Ayase, Yui Aoi, Marin Ogura and the others are 6th graders! One day, the girls are talking about kissing.
Release date: 4/11/2016
Confession
- Episode number: 2
- Episode duration: 24 min.
- Episode description: At Yui's household the bath broke and she has to take bath at Hiyama Bathhouse. Even though she decided not to fall in love, she starts having feelings for Kazuma Hiyama.
Release date: 4/18/2016
Double Date
- Episode number: 3
- Episode duration: 24 min.
- Episode description: Yuuto asked Hanabi to go out with him. His girlfriend convinces him to take Yui and Kazuma along with them. The two couples go on a double date at the mall.
Release date: 4/25/2016
Triangle
- Episode number: 4
- Episode duration: 24 min.
- Episode description: Class 6-2 has a new student: Hanabi's childhood friend who has just came back from Tokyo, who starts having a crush for Hanabi, despite seeming to be a bit of a bully.
Release date: 5/2/2016
Birthday
- Episode number: 5
- Episode duration: 24 min.
- Episode description: Hanabi and Ayumu go shopping to get a present for Yuuto's birthday, after which Hanabi will go on a date with Yuuto and give him his present.
Release date: 5/9/2016
Boyfriend
- Episode number: 6
- Episode duration: 24 min.
- Episode description: Ayumu tries to take Hanabi away from Yuuto. They wind up in a race. Cocoa, who wants to be Yuuto's girlfriend, decides to help Ayumu win. Can Hanabi and Yuuto discover the truth?
Release date: 5/16/2016
Beginning
- Episode number: 7
- Episode duration: 24 min.
- Episode description: After Kazuma asked Yui to walk her home, she thinks what does she like him for. The answer finds it's begin in previous year...
Release date: 5/23/2016
Names
- Episode number: 8
- Episode duration: 24 min.
- Episode description: Hanabi and Yui try to address Yuuto and Kazuma by their names, and to make the boys do the same. In the end, only Yui and Kazuma manage to, when Hanabi and Yuuto couldn't.
Release date: 5/30/2016
Friends
- Episode number: 9
- Episode duration: 24 min.
- Episode description: Due to a misunderstanding, Hanabi and Yui fall out with each other and won't speak to each other for the next few days. In the end, Hanabi reconciles with Yui while defending the latter from other girls from another school.
Release date: 6/6/2016
The Weaver Girl and the Cowherd
- Episode number: 10
- Episode duration: 24 min.
- Episode description: With the Tanabata coming along, Hanabi's homeroom teacher asked the class to write something nice about their classmates in their Tanzaku in hopes that it will strengthen the bond between boys and girls in the class.
Release date: 6/13/2016
Summer Love
- Episode number: 11
- Episode duration: 24 min.
- Episode description: After accidentally hitting Yui on the head with a football during the gym lesson, Kazuma invites her to a pool date as an apology and they invite Hanabi and Yuuto.
Release date: 6/20/2016
Fireworks
- Episode number: 12
- Episode duration: 24 min.
- Episode description: With Yui's cram school lessons and Kazuma's work in his family's bathhouse, Hanabi and Yuuto are left to go on a date at the summer festival.