I think it's very possible that Trigon amnesia'd himself, knowing how the emotion crystal extraction from the guardians works. It's possible he implanted some kind of subconscious trigger within himself to 'fight Trigon', so that he could re-learn how to get the crystals by talking to the people around himself post-amnesia, then collect them. Once he has all five, I think he'll attempt to summon Trigon, in actuality resummoning his full powers and all his memories and stuff.
That's a crackpot theory, but it's the one I currently believe. He could never get the crystals in his true form, so I think he's done this so that he honestly believes he's going to fight Trigon with them, thus making it easier to get the five guardians to trust him. They'd certainly never fall in love with the being who destroyed their dimension and brought about the apocalypse.
Supporting points... the nun of the asteroid temple seems gleeful to be spanked by the MC (who she probably knows is Trigon), and said nun also drip-feeds him crucial information about how to get the crystals (after getting the book of demons and the book of... angels? from the city). Riaez may or may not be working for Trigon's side as well. It's heavily implied in the most recent content that she's a free actor, just trying to survive the apocalypse and grab power for herself... but she's also the very first person you talk to after waking up. She *could* be on standby for Trigon to recover, and get him started on the right foot. Finally, she outright says something like 'I've never felt more powerful than when I took your sperm' somewhere around the midpoint of the current content, maybe a bit before.
Feedback for
AlisaDryz specifically... Lack of actual Arella content so far is kind of a bummer, I'd love to see that happen soon. Luand'r has had some really fun stuff so far as well. Her whole sexual awakening while the brutish Tamaranian bodyguard dude was outside, apparently not understanding what was going on within was just A+. I *believe* I'm more or less at the endpoint of the current content... or at least VERY close to it, and I'm looking forward to seeing what more y'all have in store for us. A couple of the minigames could use a tutorial screen before they actually start to explain what the objective is, imo. Some of them are obvious, but the spanking one took a few tries to realize I want JUST five smiley faces, and the keypad thing for the room where King's Sword is was hard to figure out. Basically had to keep trying until I found the correct path.