That Mask, Only I Know.

Shiratsubaki Private Academy, a girls' school on a hill, feels even more closed off when the June rains begin. Sae Himari, who treats everyone with a bright smile, secretly loves her classmate, Shion Mio. She believes that loving another girl makes her abnormal, and she hides behind a cheerful mask every day. But Mio already knows. She knows Himari's feelings and her suffering. Mio pretends not to notice, but sometimes she lets her sweet possessiveness show, only for Himari. On a rainy day afte