Oh. It's those two.
Edit: Boushi-ya's chraracters, right?

Yes. Although... where did the Boushi-ya spelling came from ?
Seems like he's using Soregashi-ya spelling for his accounts, which is also another way to read the kanji.

Seika said:

Yes. Although... where did the Boushi-ya spelling came from ?
Seems like he's using Soregashi-ya spelling for his accounts, which is also another way to read the kanji.

See also the artist's tweet.

Mamizou said:

Oh. It's those two.
Edit: Boushi-ya's chraracters, right?

Yes, Dr. Hasebe and the nameless labcoat fairy.