Yojouhan Shinwa Taikei (The Tatami Galaxy)
The Tatami Galaxy (from Anime Tourism website)
The original author is Tomihiko Morimi, who is also drew the manga "Uchoten Kazoku" (The Eccentric Family).
The novel "The Night Is Short, Walk on Girl" by the same author won the Shogakuro Yamamoto Award and got 2nd for the Honya Taisho Award.
The anime based on "The Night Is Short, Walk on Girl", featuring the voice actor Gen Hoshino, will be released this year!