[Happy Sex to - (Kurusu Han)] Hatsukoi to Hajimete｜First Love, First Time [Crystallized]

A petite, wide-eyed young woman crosses the threshold of her first sexual experience with an awkward young man, moving from oral contact to vaginal penetration as her bare shoulders, soft belly, and parted thighs tense with every nervous breath. His apologies meet her shaky protests—“You dummy…” and “I told you to wait”—before their shifting positions on the bed carry them toward shared release. First-love awkwardness becomes breathless surrender as she admits that the fluttering deep in her tummy will not stop.