Honestly, I don't think she meant it ironically.
He's basically the only guy, the top girls there all like him, the business class upperclassmen are on great terms with him, and the underclassmen have a group that treat him like their yakuza boss... yeah, he's the Motoshiro High prince.
"You know Charlotte loves you, right?"
"That might just be my misunderstanding."
Charlotte proceeds to take every opportunity to press herself against him.
"Ah... I looked at him first thing when class ended. Gotta stop that, dun wanna be a stalker."
"Huh, I accidentally thought about him on yhe way home and found his house. I better dip, I don't wanna be a stalker."
"Huh, that's neat. I'm gonna take a picture of him doing that..... OH NO IM A...
"WHAT?! MANAGEMENT?! DON'T YOU WANNA BECOME KING OF THE OUTLAWS?! ISN'T THAT EXCITING?!" -Newbie Outlaw
"If you want to rule the outlaws, you're gonna have to go through me first." -Accidental Outlaw Queen
"LUCKILY, I keep a fire extinguisher in my kitchen for grease fires!" Time. Like, he pulls out something completely unrelated to Airsoft, he just keeps it in the closet.
That would be hilarious, but not something the author would do because it seems like he just wants to talk about his favorite...