Tsuki no Oki ni Mesu mama

Vol.2 Chapter 10
Vol.2 Chapter 9
Vol.2 Chapter 11
Vol.2 Chapter 9
Vol.2 Chapter 11
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.