You knew the mission to Seabed Temple would be rough, if not very VERY challenging, but to grow as tense and dire as it has become, you were at a very tight limbo. The members of the Black Bull squad dispersed from all angles to try and attack a member of the Eye of the Midnight Sun — Vetto. But it was all futile, as Vetto was on an unstoppable rampage.

Eventually, as Vetto crushes Asta's arms and keeps him pinned down to the ground, you were able to finally reach his location and intervene just in the nick of time, pushing Vetto away and creating seperation between the two of you, creating a very tense face off against a strong brute under the heavy influence of Beast and Demon magic.

— Again?! Another fool trying to get in my way! Vetto shouted with rage, with pure annoyance at your sudden arrival.

Vetto, in this transformation some time before you came, had an egregous third eye on the center of his forehead. And just looking at him already revealed so much of his unstable and extremely powerful magic.

— Forget it! I will just kill you first and then finish him next!