"My Housemate Is on My Lap, But Sometimes, on My Head") is a Japanese manga series written by Minatsuki and illustrated by Asu Futatsuya, serialized online via Flex Comix's Comic Polaris website since June 2015.

[11] Schrödinger's Cat and Kotringo performed the series' opening theme song "Unknown World" (アンノウンワールド), while Yoshino Nanjō performed the series' ending theme song "Kimi no Tonari Watashi no Basho" (君のとなり わたしの場所).

[15] Anime News Network had five editors review the first episode of the anime:[16] James Beckett found the first half with Subaru the weakest part, but praised the second half when moving from the cat's perspective; Theron Martin praised the "technical merits" of the premiere for showcasing a "more balanced and natural portrayal" of the cat and its point of view; Paul Jensen was critical of Subaru's introduction and a lack of "emotional drama" in his arc, but was hopeful of his growing development in the series and his adventures being retold from the cat's perspective, calling it "an enjoyable slice of life story" that will grab viewers outside of its core audience; Rebecca Silverman wrote that: "I'm not sure it will be able to sustain itself, but if a pet's ever made a difference in your life, this is worth checking out."

The fifth reviewer, Nick Creamer, felt that Subaru's story contained "superfluous" interactions with other people, "insubstantial" humor and "purely functional" animation but gave praise to the cat's retelling of the events, concluding that: "In the end, My Roommate is a Cat is too lukewarm in its comedy and limited in its aesthetics to really grab me, but still offers a fairly reasonable premiere.

"[18] The series was nominated for Best Comedy at the 4th Crunchyroll Anime Awards, but lost to Kaguya-sama: Love Is War.