It... I'll draw it for you, perhaps. That will be a simpler way to understand, I think.

[Which is all the warning he actually gets before Hythlodaeus lubricates his cock and lines it up with Byleth's cunt.]

[He tugs him so that his ass is hanging off the edge, the head of his cock presses against the opening as they're finally at eye level.]

The very keenest, I'm told.

[He presses forth as he pulls Byleth onto him, seeing how deep he'll go.]