@Caboov "Then why did she even call him?"
Because she's head-over-heels in love with him and wanted to have him eat the food she fixed for him, obviously.
Also, this arc is really starting to heat up. We're finally graduating out of delinquents and into the real-ass Yakuza. It will be fun to see the team-up Rokudo is forced to pull out of a hat to resolve this situation. Call me basic, but I love the cycle of his power causing problems, having to resolve those problems with violence, and then temporary peace followed by yet another problem where we have to call on the previous people we fought against to help us out of this bigger jam. Not only is this one of the rare harem mangas that isn't drowning in cringe and horny, but it's a fantastic example of how to do Defeat Means Friendship correctly. I can't help but feel that by the end of this, Rokudo will have "collected" half of the criminals and delinquents in the city.
The only question is, will that be enough to stop Ranna? Magic 8-Ball says, probably the fuck not.