Hi everyone,
Calling Japanese Grammar large, difficult, and nuanced shouldn’t be too controversial a statement- atleast I hope not- and as a current active learner there are still plenty of roadblocks. Usually all my questions are answered by just… continuing to study further and/or poking around on the internet- but I ran into something new to me and can’t find any resource(s) to confirm my presumed interpretation and/or explain a more accurate one. Turning to the lovely people here in hopes they can fill me in. Thank you in advance for anyone that does 
Just out of curiosity I turned on the old GameCube Animal Crossing / どうぶつの森 in Japanese since the light, realistic conversation (and nostalgia) seemed like a decent way to play around with my knowledge for a little bit tonight. I didn’t play long, but I noticed in some of the conversation that the も particle is used as a sentence ender?
For example, this screenshot (the context being I was taken to choose a house, which I did. No further actions or characters involved)
Everything else about this sentence makes perfect sense to me.
「いまから そのおうちはブレンデンさんのものだ」roughly~ “From now on, this house is Brenden’s”
But that も at the end has me wondering. Bunpro didn’t have any notes about this, reliable sites I’ve used before for grammar points didn’t have anything, Reddit was bare, etc. Even the lame automatic Google AI nonsense bluntly (and comedically) states “The Japanese particle 「も」(mo) does not function as a sentence-ending particle”. Hard to take that as an answer when I just saw it as one, y’know?
I have zero clue how this usage would fit the typical も “also / too” functionality I know it for (nobody else chose a house, I didn’t choose multiple, etc), which leads me to believe that this is simply a sentence flair/emphasis particle akin to よ , ぞ , ぜ , わ , etc? Is there a cultural usage I’m simply unaware of where も just adds some flavor? Does it follow gendered patterns like others or have specific formality nuances? Am I entirely wrong?
Not the most pressing concern by any means, but if this something I’m seeing in the opening minutes of a kid’s game predicated on casual conversation I have to imagine it’ll show itself as I engage more with immersive content. Much appreciated if anyone can straighten this out for me.
