Triangle
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.
Aired 25/04/2016EP 4 - Triangle
2016
12-sai.: Chiccha na Mune no Tokimeki
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. This is the depiction of a 12-year-old girl's innocent worries and first love.
(Source: Anime News Network)