The story is a comedy about Lucius, an architect of public bath houses in ancient Rome, who time-travels to various modern-day baths in Japan. The author explores the two cultures in the world "that have loved baths the most: the Japanese and the Romans."

[Source: Wikipedia]

Lucius ends up in a space station, where he experiences zero gravity and learns about heliocentricism.

Bonus episodes included with the BD/DVD.

The first episode consists of "Miwaku no Farosu" and "Sanshimai OL Terumae Satsujin Jiken."

The second episode consists of "Subesube ni Naritai" and "Hitasura Suberitai."

Lucius ends up at Yoyogi Animation Academy, where he experiences a guided tour of the academy, learning various aspects of animation along such as moe and after-recording along the way.

Lucius, a bath designer in the Roman Empire, accidentally slips back in time to present day Japan and learns about Japanese bath culture in this comedy.

[Source: Netflix]