Is Fate/Grand Order: Zettai Majuu Sensen Babylonia - Initium Iter hentai?
English title: Fate/Grand Order: Absolute Demonic Front - Babylonia Initium Iter
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Special · 2019 · 1 episodes · PG-13 - Teens 13 or older
Action, Fantasy
The year 2010 AD. Romani Archaman has been posted to Chaldea. There, he becomes the primary doctor for a young girl. Mash Kyrielight, Chaldea's second successful summoning experiment, is interested in the word "Senpai." The interaction between the two gives Mash a reason to hope. That hope becomes a wave and starts to spread. That is your story, the story of a normal "somebody." The story at the beginning of a journey that weaves the future. (Source: AniplexUS)
View on MyAnimeListShare
Check another title