Hajimari Wa Naka KaraHajimari wa Naka Kara; It Starts from the Inside; Shio Fuite Chi Katomaru; Я понимаю, что это твой первый раз; はじまりはナカから; 潮吹いて地固まる; 潮吹液涌 死心塌地; 第一步要从里面开始; 시작은 안쪽부터

Sho Itoguchi, an office worker who runs a site selling urethra bougies as a hobby, finds his boss's name, Noriyuki Kiyama, within the list of prospective buyers. Later on, he brings some urethra bougies to Noriyuki's home and starts his "lecture" just like that. Despite it being Noriyuki's first time, he's drowning in pleasure in front of Sho. Sho can't hold back his excitement! Includes: - Hajimari wa Naka kara - Shio Fuite Chi Katomaru