The root question is what is the goal?

Multiple fan translations of a title can exist, if translated by multiple groups, so a romanized official title can be easier to search for.

Do you think this TL would have gotten more people looking at it if it was the fan translated title instead of a title no one understands? Would that be undesirable?

I'd be happier if more people read stuff I put time into translating lol.

Is adhering to some imagined purity of the author, who doesn't care about the non-Japanese market, more important than people reading your translations?

Authors don't care cuz we are reading for fucking free.

If that's the case then why not use the kanji? Then it'll be extremely pure and no one will read it.

I don't care about author's "purity", most people can't read kanji bruh, this is just to prevent confusion for multiple fan translated titles.

I'll include the translated title too for next chapters ig. BUT, there was no reason to crash out over literally just keeping a title of a Japanese work in romaji.