Mio, a close friend of Musashi's mother, came from the countryside to Tokyo for sightseeing. Musashi didn't have high hopes, thinking she'd just be an old lady... but he was taken aback by Mio's beauty. Completely smitten, Musashi offered to show her around, but in reality, he had started harboring impure desires, trying to find a way to spend the night with her… Eventually, peeking at her while she bathed wasn't enough, and he even snuck into her room at night. Feeling sorry for him like this, Mio...
