User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-2602:306:CD9A:C860:1968:D639:D915:7F3-20190120223420

We know Issei wanted to beat Rias to prove his worth but what was Rias motivation to beat Issei. In volume 24, she said she wanted to be stronger in order to not be a burden but that's just her reason for wanting to get stronger.

What's her motivation to beat Issei? Or was Issei just another opponent?