Hikyoumono dato Waratte Kure
Complete | Mitsuko | 2019 released
Gay introverted painter was outted at his old school so transferred to new HS where he made new friends and fell in love with one, only to discover that his crush was in love with their other friend. He gets outted again but protects his friend, and knowing how bittersweet his love is, he goes to a uni very far away. It's only upon graduation that his crush realizes his feelings and chases after him. Hurts reading it, but it was a realistic read.
Incidentally Living Together