A childhood friend who makes him tingle when she gets near. ❤

1. JK-chan to Toshigoro-kun #1 (JKちゃんと年頃くん #1); Weekly Kairaku-ten Vol.58
   
2. JK-chan to Toshigoro-kun #2 (JKちゃんと年頃くん #2); Weekly Kairaku-ten Vol.63
   
3. JK-chan to Toshigoro-kun #3 (JKちゃんと年頃くん #3); Weekly Kairaku-ten 2021 No.16
   
   
   
   Note: A compilation version, which compiles the first two chapters, was released on Apr 28, 2021.