Oh! Toumei Ningen

Tooru moves in with his female relatives, including his mother, grandmother, a third-grade student, a first-year high schooler, and a second-year college student. During a family dinner featuring salmon roe, which he dislikes, Tooru bites and then flees to the bathroom, where he unexpectedly becomes invisible. He uses this newfound ability to observe his female relatives, taking advantage of his condition in ways typical for a teenage boy living among many girls. The story follows his various experiences while remaining unseen.