I had a very very very similar experience with all the same things...
I am a transguy and *we* are plural!! yes, a system...
we didn't know it then, literally when Will (another constant fronter, like Gold, who protects) saved us (kind of)
I am also a therian (Will is otherkin) we don't date, just good friends and system buddies (though we have a tonnnnn more alters) we found out after seeing a lot of therians and our therian friend explaining it to us and me feeling phantom ears and tail!! We have a few different theriotypes but none of our other alters are therians
we loved this game-- actually got us talking to some other systems about it! :3
(if anyone wants a safe space for therians, otherkin, and systems [this includes people who want to learn or think they are] add sticky_n0te on discord and I'll send you the link [the server is uncompleted and stuff a work in-progress but we want to start a community already!!]
- the abditory system (Felix - host)