Kozukuri Ninkatsu Bu is a type of adult entertainment that originated in Japan, specifically designed for elderly men. The term "Kozukuri" refers to "old man" or " elderly," while "Ninkatsu" means "pleasure" or "entertainment." The "Bu" suffix indicates a club or group. In essence, Kozukuri Ninkatsu Bu is a form of entertainment tailored to cater to the desires and interests of older Japanese men.
: This appears to be short for "Ninkatsu" or could be related to "nin" meaning person and "katsu" meaning living or lifestyle. However, a more direct interpretation could relate to "marriage" or partnership activities, akin to "omiai" or matchmaking.