В поисках вдохновения древнеримский архитектор Люций Модест пришёл в баню, но он не в силах расслабиться в собравшейся толпе. Пытаясь хотя бы на минутку скрыться от шума, он нырнул с головой под воду и обнаружил межпространственный туннель, который перенёс его в современную японскую баню. Новый незнакомый мир пробуждает в Люцие угасшее было желание творить и воссоздать у себя дома все те удобства, что видел в будущем.

Lucius Modestus, an ancient Roman architect, finds himself job-hunting due to having trouble coming up with new ideas. As his demeanor and personality become dismal, his friends try taking him to a bathhouse for him to relax. Unable to unwind in the bustling and crowded bath, Lucius dips his head in the water. Down there, he finds a secret tunnel that transports him to a modern-day Japanese bathhouse, providing him the inspiration he needed to make a new creation.

Loaded with what seems to be knowledge way ahead of his time, Lucius does his best to try and recreate his findings, usually inferior in quality due to his circumstances. However, the sheer ingenuity may be just enough to gain the attention of the citizens and regain his reputation as an architect.

[Written by MAL Rewrite]