I am a fcking trope gathering
tsun, yandere, genius, ex-genius, hyper active, taciturn, innocent pure naive, depressed-betrayed-hero, clumsy, smart, stupid, otaku, gamer, crazy, ruthless,
Also any anime situation that can happen, probably experienced it (logical ones)
The ultra high animation quality of it (that should have gave a hint of its popul potential)
I am not sure if same animator/team but there is a old very fluid jpvideo where a character sing/dance with a coke bottle
similar to ui song, and had like 5.6m views despite MEGA SHORT song
so yeah...
edit :