I watched it two times, when I never heard of the game and after I beat the entire game. It was very boring the first time but very heartwarming the second time.
Basically if you want the full experience you'll have to go through the 20h of playtime of the game first (but since the game is really good and traslated in english on steam it's alright)
Really I loved seeing my favorite characters but in chibi animated format whithout the violence of the game. It's a good fan-oriented chibi anime
Loved also the fact that sometimes the ending is the opening of the game
