User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-1.53.124.174-20150712141105/@comment-42.112.87.13-20150713003309

@B214

They had different goals, backgrounds and skills but the same introduction.

-Enemy somehow appeared (for Strada it's inside Gremory territory).

-Enemy talked or fought a bit.

-Enemy retreated with little to no damage.

-Issei and co powerup, defeated enemy somewhere else.

That is the repetition, coating it in different enemies objects doesn't change that.