Guys, if something needs to be entered into this crossword, then the second letter of one word and the first letter of another should match, and there should be five letters each. If we only consider the number of letters and not the fact that they should be the same, then I think it's more likely to be Vikha, who probably killed someone on the first night (I wrote down the clues), and this is additional evidence from the third night.
Maybe it should say "I'm Major Vikhr" xD
P.S. Everyone knows Kostyan's role.