does this have a novel? I couldn't find any though.

It's not translated. There's a petition on novel updates hoping someone will pick it up: https://forum.novelupdates.com/threads/its-sudden-but-i-came-to-another-world-but-i-hope-to-live-safely.84473/

It's been picked up now: https://www.novelupdates.com/series/its-sudden-but-i-came-to-another-world-but-i-hope-to-live-safely/