Short story sequel doujinshis of Toshishita Kareshi ni Hirowaremashita: vol.1: Toshishita no Kuseni Iroiro Sugokute Komarimasu / Despite Him Being Younger, There Are Various Things That I Worry About (2016/10/02) vol.2: Toshishita Kareshi ga Tamani Kawaikute Komarimasu. / My Younger Boyfriend is Occasionally So Cute it Kills Me (2017/3/20) vol.3: Anta ga Omou Hodo Otona Janaishi / You're Not As Grown Up As You Think (2018/03/04)