Tida no Glass

Sanae has cherished a special promise with Riku, the boy she's loved since childhood - a vow to share her first everything with him when she turns sixteen. As her long-awaited birthday arrives, the two find themselves standing at the threshold of young adulthood, their innocent relationship poised to blossom into something deeper. This tender coming-of-age story explores the delicate transition from childhood promises to the complexities of first love, where feelings are as fragile as they are powerful.