A promiscuous stepmother who frantically licks her son's morning erection - Mio Kimishima, SODx adult novel adaptation series SDMU-810

Mio Kimishima's husband passed away from illness, leaving her to live with her stepson, Kenichi. Despite upholding her chastity since her husband's death, she sometimes feels the urge to have sex, but she suppresses it to raise her child. However, one day, upon seeing her stepson's erect penis, she can no longer resist licking it…