To some viewers, the side ship feels more natural because the author doesn't need to stretch it for runtime. So it progressed nicely.
Inuyama is a lot more assertive, he's a pervert, but he's not a caricature, and he has the self-confidence and humor that friends can feed off of. It's no wonder Seto is friends with him, when Seto is not a pervert at all.
Anjou and Seto feel like they should've started dating 15 chapters ago.
Also Toyoda's boobs.