Furuichi may be a selfish, female obsessed coward, but hey at least he's honest with himself and is dangerously genre savvy to the point of knowing the limits of his character type.
Did somebody order one loli tsundere, heavy on the tsun? Poor Lamia chose the absolute worst guy to crush on. She and Aoi have questionable tastes, at best.
Oga and Hilda argue just like any other married couple. She's falling more and more into the normalcy of human life. Nagging Oga about circumstances out of his control, jeez woman what'd you expect from the king of delinquents? At least he actually wants Beel now, if that's not an upsurge in maturity I don't know what is. She's way too damn overprotective. Don't coddle him like that, let Oga teach him how to be a man!
Ah well, luckily some Habanero meat buns calmed her down. (That's one hella spicy sauce) I know she only wants what's best for Beel, but Oga's got that down. Their bond as father and son is irreplaceable, and even she deep down probably cares for him. Her tolerance for his stupidity is unfortunately very low.
The old guy could be anybody, but he's tough that's for sure. He's a master of shoe fu! Wonder what will become of the Rokisei after Ishiyama leaves? Well Miki, Izuma and Shizuka are the only ones that matter so I'm sure they'll still show up. Oh and maybe Oga's fanboy and his friend too.