Thermae Romae Novae (and its manga by Mari Yamazaki) is a historical comedy series that follows a Roman architect who finds a hidden portal to modern day Japan. Using this insight of future design, Lucius Modestus hopes to design a Roman bath to show off his skill as an architect.
The anime will be produced by NAZ- unlike the original TV anime in 2012 which was by DLE. This anime will also be directed by Tetsuya Tatamitani, and written by Yuichiro Momose.
A summary of the series from MyAnimeList can be found below.
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.