[ohkohaku] Marin's Birthday Surprise+ (Sono Bisque Doll wa Koi o Suru)

Marin Kitagawa expects a birthday surprise, but Satoru Gojo turns the encounter into a chaotic game of anticipation and control. Her delighted expression, curving silhouette, and confident pose keep the mood playful, while his blindfold, forceful positioning, and their acrobatic arrangement add a sharper edge. What begins as a swimsuit-themed birthday surprise becomes a high-energy collision of teasing, embarrassment, and surrender.