Though the characters' faces do look kinda weird, I still really like this. The art style gives off the same chill vibe as the story/plot does and the deformed heads and scribbly lines almost add more movement and fluidity to the manga, as if it were still images taken from an animation (for me at least)
I would also hesitate to label it as lazy; even with the minimal style, if you compare frame-by-frame the author actually draws every single background even if the perspective+location is the same instead of just copy-pasting them. and the background art is in a pretty modern style too haha