My Friend's Abnormally Cute Sister by Fuyujima Kure

Volume 1

Chapter 1 released Aug 18 '23

Chapter 2: Lil' Sis Shocks! released Sep 18 '23

Chapter 3: Lil' Sis Schemes released Dec 2 '23

Chapter 4: Lil' Sis Stalks released Dec 3 '23 Stalking

Chapter 5: Lil' Sis Trains released Feb 9 '24

Chapter 6: Lil' Sis Infiltrates released Feb 10 '24

Chapter 7: Lil' Sis Comes Out on Top released Mar 25 '24

Chapter 7.1 released Apr 18 '24