[Mahiruno Kagerou] Another Good Day to Train my Mother and Little Sister Ch. 1 [menospeaknihongo]

A dull, unremarkable schoolboy who dreams of an ordinary life sees that fantasy shattered after what he catches his voluptuous mother doing, sparking a secret plan the moment he walks through his own front door. With shibari rope — even a misappropriated preorder lasso — he subjects his busty, big-breasted mother and his strict honor-student sister Kotoha to relentless hands-on training, binding their soft curves, teasing them until they are dripping wet and begging to be filled inside. What starts as discipline quickly melts into breathless blowjobs, creampies and desperate pleasure, until his sister walks in and discovers exactly where her rope has been used.