That isn't a very big apartment, I'd think sound would carry. Kinda expected the customer to stick her head in and be like yea, I heard all that... I'm (cool with | absolutely not cool with) this kid giving it a shot lol.
I'm totally with him on his reaction when he caught up with her that night. Post bath Nazuna is
way hotter with her hair down. After seeing that and hearing her explanation about feelings and blood, I'd be hard pressed to not say something like "well... imagine what my blood will taste like post coital"
