Ryota became one of my favorites since the beginning *^* the writers better not screw this up he became my cinnamon roll

there's probably a reason why the Ultimate Imposter decided to act as Ryota too??? I mean, it might make sense with this theory, but we still don't really know who the Ultimate Impostor works for, so Ryota's identity as of Despair arc still remains a mystery, somewhat. Junko can get easily bored with agreeable, normal human beings, and often goes for people who can shake up her despair, like Naegi, so she took a liking to Ryota, but who knows? she might know something the viewer doesn't. in any scenario, the fact that the ultimate impostor tried being Ryota along with the Remnants of Despair is difficult to ignore.