USBA-018 Actually, I... am a masochist. I imagine being humiliated or defiled during masturbation. A hidden big-breasted part-time worker from Aomori with uncontrollable masochistic desires, Yuna-san, 23 years old.

Locally, graduated from a junior college in Aomori. Originally had few friends and was the type known as an 'indoor person.' However, he had an incredible imagination and since middle school would imagine being humiliated or defiled while masturbating and stimulating his genitals. Later, he dated a sadistic person and awakened as a masochist. After moving to Tokyo, he worked part-time at a food processing factory but the stress from work built up, leading to days of frenzied masturbation. Unable to hold back any longer, he applied for hard-core BDSM filming.