This is more or less a reflection of my comments on Kurosaki-kun (2015) as they are much the same anyway. Cool, done really well - a potentially far from amusing bully-masochist theme played very adeptly to finally bring out the comic slant. The clue to this happens quite soon in the movie. Nakajima's earlier delinquent role Bad Boys J obviously gave him suitable experience for this movie and Kurosaki-kun 2015 also. Some might say Kurosake was OTT and Akahane OTT passive but that's actually the nature of manga, it doesn't generally do "refined" (does it??) I would re-watch this as it's short and funny and suitable for a night when you need undemanding relaxation or cheering up.