This isn't your typical manga, of villains and heroes. Throughout the manga, we get to see what Mr. Villan (who is one of the antagonists in the book) does. When he isn't on his day off, we get to see a new side of him. He is ruthless as many villains are and wants world destruction although he has one goal in mind. SAVE THE PANDAS.
I truly love how Yuu Morikawa created Mr. Villan and his love for Pandas. I really feel like he is slowly liking humans by some of the interactions he has been in. As well, I absolutely love seeing what Mr. Villan does on his day off.
I DEFINITELY recommend you to read Mr. Villain's Day Off. You won't regret it.