[I-Raf-you (Shomu)] Memory Lapse (Microne Magazine Vol. 38)

A shrunken brother wakes with no memory of who he is, cradled in the hands of a doting girl calling him her onii-sama — but behind her sweet voice lurks a yandere sister who arranged it all. She smothers his tiny nude body in saliva-drenched cleavage, squeezes him between plush thighs, and savors every helpless, dog-like plea for forgiveness while staying perfectly clothed herself. When her composure finally snaps and she coos that she can't hold back anymore, there's only one place left for a doll-sized man to go: inside her.