Clumsy Surprise

On Kakeru's birthday, September 4, his usually shy and clumsy girlfriend Chiaki suddenly announces and books an onsen trip. After bathing at the inn she suddenly appears nude and aggressively seduces him, initiating fellatio, paizuri, intercourse and more unlike her usual self; she reveals she remembered his birthday and wanted to make it special, and Kakeru is moved by her assertiveness and love as they have intense sex. Chiaki and Kakeru then soak nude together in an outdoor onsen, where Chiaki apologizes for being too aggressive earlier while Kakeru praises the bath. After Kakeru panics grabbing her breasts, Chiaki embraces him, puts a finger to his lips, and says she wants to make even more memories next year as the story ends.