... I don't quite get the context. I know he's obviously upset at SOMEthing, but I'm not sure what it is, beyond that it's related to Ai.

Ai pops up on TV while cheering for her school's baseball team. Twitter is instantly flooded with comments about her tits.

ShadowrazoR said:

Ai pops up on TV while cheering for her school's baseball team. Twitter is instantly flooded with comments about her tits.

And her lover ain't too happy those things are being said about her.

Ah, OK.

Say, isn't that Ai's friend in the last panel where Ai's trying to cover her face? I guess she too caught sight of the cameraman and is really pissed as a result?

That feeling when the net finds out she's spoken for lol.