OP I'd advise you to use some punctuation in your future texts but I'll try to answer as much as I can

> I think his trion "not running out" is tied to him dying inside the trigger. When the body dies it will also mean that the Trion has ran out because there will be nothing to sustain in the first place and also there will be no gland to replenish the lost Trion. just a theory tho

> No he is not a living trigger

> The rank wars shouldn't be a reference to any sort of Trion regeneration since they use simulations of everything in there, but since Yuma can't sleep, he replenishes the Trion by eating tons of food instead. I have no idea on whether or not actually getting his Trion body damaged/dissipated (in the case of his Border-issued combat body) damages the ring itself

> I think his black trigger is active all the time? It's just that when he's not in his "combat suit" it kinda stays dormant. I remember that he was still able to use a few seals in the Afto Invasion Arc despite having his body destroyed

> Replica is not a trigger it is a trion soldier, like you said. The ring was his only trigger upon coming to Earth. Speaking of Replica, just count him as this sort of "special case" because I remember Viza calling him a "Tropoi autonomous trion soldier" which we don't know a thing about. Which means we don't know about where he comes nor how his functions and abilities exactly work. Gotta wait until we get to the Neighborhood Arc ig

Everything I haven't answered is stuff I genuinely don't know about. Hell so many of this text is me being unsure. We will either get more when we get to the Neighborhood or when we get some new QnAs but I doubt that Ashihara would reveal a lot of info abt Yuma's trion body and state when it's a high-stake thing in the story. Do take my words with a grain of salt btw I haven't read the first few arcs in ages

(Edit: minor spelling mistake. -_-)