Complex sentence: Reisen is the strongest of the three, and Yomi is the newest to obtain power.After recieving a pretty severe beaten by Reisen, Yusuke vowed to become strong enough to kill Reisen.
Split into simpler sentences: Reisen is the strongest of the three, and Yomi is the newest to obtain power. After receiving a pretty severe beaten by Reisen, Yusuke vowed to become strong enough to kill Reisen.