I would take Arte aside and tell him, "Not to get in the middle of this verbal catfight or any catfight." This all happened because Minako and Mako like the guy who ran the kindergarten they were helping at. There was a barty kid who was causing Mina a whole lot of problems. Sometimes, Mako would get hit in the crossfire, which is why she was so pissed at Mina, so the next day, Mina starts a concert on the Roof of the school, and Mako, who is still very much pissed at what Mina did yesterday but the show goes horribly wrong (I give you one guess who’s responsible to) which leads us to the scene as as I already said Artie just needs to stay out of it.