Kyuujitsu no Warumono-san  

休日のわるものさん, Mr. Villain's Day Off

An organization with malicious intentions seeks to attack our planet, Earth. One of their members, known as The General, usually engages in combat daily alongside the Earth Defense Forces, also called The Rangers. However, today is a day off for him.

Kyuujitsu no Warumono-san has been published digitally in English as Mr. Villains Day Off by Square Enix through Manga UP!