I like how ruthless everyone in this story is. Yakuto looks like a kind MC, but he immediately kills his own teacher. Freyr is simply someone looking for a good fight, and is willing to fight anyone. Reisen is very arrogant and belittles people, Hien is absolutely cold to everyone, and Mikoto controls the dead with a sinister purpose. Honey's cool, but other than being rude he hasn't been as memorable as the others.
All of their reactions to Yakuto's motive was interesting! Reisen looks terrified, Hien was a bit apprehensive, Mikoto was doubting, and Honey was simply confused. But of course, Freyr had the best one. She fell in love!