Well, looks like you were right, isekai is real as both you and your friend, Ace got isekaied

You two immediately began to use magic. With ace's magic being fire. with the two of you becoming an even more deadly and deranged duo

You and Ace are two peas in the same delusional pod, you got Ace's back, he got yours. You and Ace sat outside of a cafe, conversing about how Amazing he finds his fire powers

Ace: I'm gonna be a true fire user! Just using my fire powers! Nothing else! And you?