Talk:Summer 2016 Event/@comment-202.12.95.232-20160822011226/@comment-26351458-20160822014311

Not in the E-3 tab, but it is implied in the FAQ section. Maybe it should be added to the E-3 and E-4 tabs so there's a higher chance of people reading it.

The fact that the quest-completion tone plays when the requirements are met (E-3 and E-4) means something does happen, though no one knows what. Lots of people even say/joke that it buffs the boss because their runs worsened after "debuffing".

Now, the boss's audio line does change for E-4 after "debuffing", and I can confirm that the change is permanent, because I cleared E-4H on my second day. I know this isn't E-3, but there's no reason for there to be both a permanent and temporary debuff in the same event, and as Shinobu55 says, no one knows if E-3's requirements are actually for E-3 or not.