BUR-447 - Stepmom's away, stepdaughter's play: 4 hours of yukata-clad forbidden fun

A risky affair during a hot spring trip! The secret life of a stepfather and his stepdaughter, hidden from the mother's eyes. Legally strangers, but morally forbidden! 'Mom believes we're one big happy family, but she has no idea I'm being ruined by him every single night.'