User blog comment:FrankieX98/The future members of the Issei's harem and peerage./@comment-2601:584:C400:82A0:C861:CFB9:7C8:845C-20181206200804/@comment-2208155-20181206215439

I think that some tournament volumes will be reserved for Vali RG(better for Issei, more time to harem girls)..

Vali vs Rias(vol 24) was in a different Volume to Issei vs Sona(vol 23,5=dx4)..

I doubt that we will see the end of this tournament before Ravel volume after Ishi said that Ravel will receive one of the next harem girls volumes..