Yukawa's torn love

Yukawa's estranged mother returns in order to regain her relationship with yukawa. He is not interested of course. A new criminal kills for fun and set his eyes on Utsumi. Yukawa's mother was found to involved in this case. Will Yukawa be torn between the sacrifices of his mother or Utsumi? I am posting up the interesting bit, please review and tell me if i should write more.