Haitoku onēsan no yūwaku ni kimi wa kateru ka? Comic

Taiyo begins his freshman year at a prestigious arts college, ready to pursue his dreams, but his plans are complicated when he meets Miharu, a beautiful and hopelessly chaotic older woman. Drawn to his earnest, straight-laced nature, Miharu calls him “Taa-kun” and sets out to tempt him with the promise of a proper college debut. As Miharu keeps up her flirtatious advances, Taiyo must decide whether he can resist her playful seductions. Their story unfolds as an everyday romantic comedy.