Originally Posted by Taon

But that's not exactly what's happening; it's not like it's one hit being countered and the unit keeps countering the one attack until the enemy dies.

It's multiple hits triggering multiple counters; at least from what I'm seeing. It would definitely be a bug if more counters were being generated than enemy attacks, but that didn't seem to be the case from the video.

I have had this bug happen after my girl (Saffron Bloomed with no other girls) got hit only once by the boss. It doesn't happen often tho and I cannot reproduce it on command.