Complex sentence: After night battles, Shudo's killers are eliminated by Daishu, but Ken under Shudo's influence turns into a rapter and then is is injured by Sergeant Kayama's team.
Split into simpler sentences: After night battles, Shudo's killers are eliminated by Daishu, but Ken under Shudo's influence turns into a rapter. Ken who became a rapter is injured by Sergeant Kayama's team.