I have that same situation with my wife(22 years my senior), and people’s first impression would be the same.
But I love my wife, and she’s what I only have.
Nikolovski looks more South Serbia last mame. Central Serbian version is Nikolić. Northern Serbian is Nikolov.
If it’s Russian, the Romanized spelling should be Nikolovsky.
Mori-san may have forgotten this small detail.
@Nixnaw No worries, that’s why I am drawn closely to mangas like this, as well as onee-shoutas or specific mangas like Watashi no Shonen, Otoyomegatari and others..