Neji was Naruto's peer. This is more like Naruto demonstrating himself with Kyuubi powers in a fight against Kakashi. To use a new power against a greater opponent and then the match ending before serious harm was done.
Yes Iruma, praise Sylvia's hidden talent. It will totally not make her enamored with you and you won't gain another harem member.
Hm. For the building, what about Agares? He can do lots of construction.
Hm. But if a man fantasizes about killing with a sword, his "wife" is going deep with another person and will never be taken the same way. So, does that make it NTR?
The narration notes the stress of the holidays pushes more people to the brink amd so allows them to see her, even if they don't understand what she is.