User blog comment:B214/Shin DxD 1 discussion/@comment-29362784-20180820222331/@comment-36523287-20180821034226

If Ishibumi sensei really want a fight between Arthur and Yuuto in this tournament, he can make Rias lose against Issei and adds Yuuto into Issei team. In this way, Yuuto can fights Arthur when Issei fights Vali.