Tags: Manga.
30-sai no Hoken Taiiku (30歳の保健体育 Sanjussai no Hoken Taiiku trans. Health and Physical Education for 30-Year-Olds) is a Japanese guidebook series written by Mitsuba and published by Ichijinsha. The series is aimed at men in their 30s who have not had any romantic or sexual relationships with women. The manga adaptation by Rikako Inomoto started on the November/December 2010 issue of Comic Rex.