The Sunflower Has Bloomed

Ha-Jun, an underground indie band member. He believes without a doubt that he'll become a star someday, so he manages his private life more meticulously than anyone else. Yet, his ‘sexual desire’ is the one thing he can't easily control. Just as he was trying to ignore his mounting sexual urges, he witnessed something truly shocking(?) at the upstairs neighbor's place, where he'd gone to fix a leak....

“If we ever do it someday... I'll make sure to satisfy you...”

...This bastard, he took off his pants?!

(Source: MrBlue, translated)

Note: Includes one extra chapter.