@Eshtha
Pretty sure she just named him after the sound he makes, and then an honorific may have been added too, since this is a Japanese story after all.
Also, yeah. Most reincarnated as a ______ stories do end up going along that route. Especially if the story is predominantly based in human society. Without a cute female/mascot creature, how would they ever expect to make sales with such a cookie cutter setting and plot?
Stories like Re:Monster and Kumo Desu Ga, Nani Ka? definitely do not follow this path though., same for Reincarnated as a Slime to an extent.