Tsuki no Oki ni Mesu mama

Chapter 28
Chapter 27.5
Vol.4 Chapter 29
Chapter 27.5
Vol.4 Chapter 29
In middle school, Ayumu kept getting teased and pranked by Runa, even though he's a year below her. Now that she's in her second year of high school, she's ready to be the experienced senpai for the incoming freshman Runa.