I’m a lecturer at a cramming school so I tried to make a serious graduation song

【2015版】塾講師なので本気出して卒業ソング作ってみたよ【ボカロ合唱】 Hatsune Miku & GUMI & IA & Megurine Luka & MAYU & VY2 & Merli & kokone & Kamui Gakupo & KYO & Anon & Kanon