Tenshi-chan to Akuma-kun - Vol. 1 Ch. 1 - Yup.

[MangaDex]

 

[SatePak]

Is this real?

 

[Yuanyu]

Is this real?

What do you mean? As a concept? DQN names or Kirakira names (translated here as Uber Fail names) exist in Japan, but it's like when someone in the West names their daughter Daenerys; it's not forbidden, but they're not doing their children any favors.

https://en.wikipedia.org/wiki/Kira_kira_name

 

[JaceG13]

...midget

 

[seno2221]

Tachibana Tenshi, hmm her name kinda remind me of someone tbh.

 

[Rickachu]

"Uber fail", this feels so mid 2000s to 2010s coded with that slang