Ugh, I think someone in reddit or discord told me that even other JP comment on what-the-hell is that TTK doing to Unicorn and the artist is saying an excuse that TTK is doing that as a form of "greeting"
Seeing the artist's timeline, it seems like there are pics of Unicorn's plushie being broken. In this picture, the Admiral apparently fixed the plushie for her, then decided to punch her for no particular reason. The commentary says "A Kind World".