Tsuki no Oki ni Mesu mama

Vol.2 Chapter 11
Vol.2 Chapter 10
Vol.2 Chapter 12
Vol.2 Chapter 10
Vol.2 Chapter 12
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.