But really, what Yui wants is to feel like she's not a burden. Like someone wants to be with her, instead of being stuck with her. Someone to love her and marry her.
Hinata steps in, weaving a tale of how they could have met and fallen in love while alive.
Yui vanishes.
Naoi as figured out what's going on, and joins Otonashi and Hinata in their quest.
But something goes wrong.
NPCs are being converted into shadow monsters. If they catch and devour you, you become an NPC with no soul.
This new threat forces a reckoning.