Is it just me, or does it seem that in this page, both Shinagawa Daichi and Seiya Chiba (Yankee-kun to Megane-chan characters) are in here. Was reading the chapters again and noticed this bit. Even the scars were on the face where it should be. The author just put it in for laugh?

it's probably just a cameo appearance and they don't actually play a role in this manga.