- Developer: Origame
- Publisher: Origame
- Year: 2017
- Genre: Visual novel
- Platform/s: Android
Cerulean Heart features Minami Yukio, the protagonist, who is a highschool student who identifies as gay. He is in love with a teacher, who is unaware.
The game also features a number of other characters with diverse sexualities, who are nuanced and do not rely solely on stereotypes. Each character has different feelings about their sexualities, including whether or not they are out, and whether they are okay with their identities.
There are explicit, labelled conversations about sexuality within the game.