That hurt, but well, we got the setup for Ch30's fireworks festival now, the recovery is coming.
Now to point out the cameos from Masuda's other works:
On Page 8 from Weekly Shonen Hachi we see Kamiya talking with shitface Hoozuki besides Nayu, and I think it may be Tanuma behind the Manager on the other side? may be just me projecting a thought of the background cameos having the same issue, but it does look like Tanuma's hair and build. If that's Tanuma, he is there from page 1 until getting up on page 8. The guy at the back besides Office Lady and Uni Student on page 4 may be Hoozuki, the outfit matches but the face doesn't, could not be him or could be it being too small for Masuda to draw well the messy hair and stubble of the shitface.
On Page 9 from Jitsu wa Watashi wa we get Yuka and Mei.