Every chapter ends and notes the date on which it continues in the magazine. Since we're behind on chapters it makes no sense to include a date that's in the past, so we simply put to be continued there.
If you're referring to the "END" tag on chapter 3, MangaDex admins didn't understand the...
We have seem him a couple of times before in classroom scenes. His name was translated as Mitsuda in previous chapters, so I've update this one accordingly. He is the smart kid who was set on going to college.
Also just fyi, we were a bit short on time this week so there weren't any proper redraws. We'll do a v2 somewhere next week with proper redraws and sfx.