WhiteDeath16

Both are princesses

He desires to surpass Lucifer and wants to cause he needs to survive in the novel but at the same time the idea of making it a reality, as in being stronger than eos Lucifer is impossible for him. He thinks he can surpass Lucifer but not eos Lucifer with two Gifts.

Not officially, he was just desired as the President by the upper year students.

It's like how universities have timings for gyms, you can't stay all night. It's done as a preventive measure to make sure they don't train late in night and don't come to classes since the students are still young so not as accountable for themselves yet.

The extra is him without the transmigrator personality, or Arthur Nightingale normally. The MC otherwise doesn't care nor wants to just be an extra in the story so why would he bother trying to stay at one? After all, if you transmigrated into a novel, your aim is not to be ordinary.

No

Yes

There is romance and yes.