Ottoman

Souya is grinding away at his boring days of office work, while holding onto his dream of becoming a manga artist. As he hurries home to his beloved and supporting wife, Yuuka, he suffers an accident, and before he knows it, he's been parasitized by an alien?! What's more, the aliens' evil tentacles are closing in on Yuuka. In order to protect his wife, Souya rushes to her aid as "Ottoman" (Husband-man)!

(Source: Shueisha, translated)