12-sai.: Chicchana Mune no Tokimeki (12歳。～ちっちゃなムネのトキメキ～) 8 years old

The story begins with Hanabi, a sixth-grade girl who is neither an adult nor a child. She deals with issues such as accidentally witnessing her homeroom teacher kissing, and worrying about experiencing physiological changes before her friends. The series depicts a 12-year-old girl's innocent worries and first love.

Credits

Cast

Name	Character
Tetsuya Kakihara He was 33 , now 41 years old	as Ayumu Tsutsumu

Crew

Name	Job title
Masakazu Kubo Production He was 56 , now 65 years old	Executive Producer
Takemoto Mori Production	Executive Producer
Deko Akao Writing She was 38 , now 46 years old	Screenplay