About Heart Stain
Heart Stain (2025–2025) is the show your friends keep telling you to watch — and they're right. Woo-hyun was planning on hiding his crush on his homeroom teacher, but his best friend Do-ha finds out and confesses for him. 1 season. 8 episodes total. Stars Hamin, Kim Ji-oh, Kang Yeon-jae, Shin Si-ye, and Kim Ye Geon. Genre: Drama. Viewer score 8.0 from 5 ratings. Watch every episode free in HD — no signup. Pick a season below to start. Each episode loads instantly in your browser, with the option to pick up where you left off across devices. The catalog includes the original release version of every season currently aired.
Seasons
Season 1
8 ep · 2025
