Rii-chan

After returning to his hometown, Tatsu meets Ri-chan, his neighbor who he played with during his childhood. Ri-chan used to love playing the piano and laugh a lot. However, with her blonde hair and piercings, she looks like a completely different person. Although Ri-chan is shy, Tatsu's kindness is unchanged, with the two gradually becoming closer.

(Source: Kadokawa, translated)