User blog comment:B214/Volume 21 info & spoilers/@comment-82.199.222.116-20160322200024

With their Diabolos Dragons, have Issei and Vali reached Heavenly-Dragon class or surpassed it? B214

Btw, from where did you find out Canis Lyakon's and Zenith Tempest's BB's abilities? I turned Animesuki upside down, but didn't find anything.