Artist's commentary
Ah! Only at the last page I forgot to draw Kotarou-kun's arm tattoo. I'll fix it when I upload a compilation later....
あっっ最後のページだけ小太郎くんの腕の刺青わすれてる。まとめアップするときには書き足します......
Source: https://twitter.com/skmtBN/status/966002016706207744
Ah! Only at the last page I forgot to draw Kotarou-kun's arm tattoo. I'll fix it when I upload a compilation later....