Well, the episode today explains why Tenshi has to speak her command for her guard skills. Not because she's a program, but because her powers are made using a program. The revelation would be really shocking to the group, if Yuri hadn't said it.
New disappearance condition: Self-discovery that leads to satisfaction.
The difference between this and living a normal student life like Tenshi says, what is it?
Could the cause be something like losing your dissatisfaction with your existence? Or is it acceptance of yourself?
Next, if Tenshi is of the same existence as the SSS people, why isn't she moving on? Given the above, what disappearance condition is she not meeting?
Repeat system:
1. We know Tenshi vs SSS have been going on for a LONG time.
2. NPCs have shown some sense of time, as seen in the teachers etc. They even mention a cultural festival. (Clock function enabled, but multitasking isn't?
)
3. Yet no one mentions that Yuri and Tenshi have been around for a LONG time.
4. Conclusion: Sometime along the way, there is either a reset of memories (probably per school year) or ignoring of facts.
Nice trip move by Yusa, that is what I call serious humour like in the latest Bakuman chapter. Next episode, who wants to bet its baseball?
The music for this series is worth buying, lol.