Duuuudes the mc is going through what most readers call "character development", i have read the novel so this is just the beginning my friends....so chillaaaax
@Panma Makoto is actually inexperienced in battle, the rings suppress his magic a lot, only a ring doesn't do much that's why he uses one ring per finger.
The reason he could defeat tomoe and mio is because his magic wasn't supressed at the time and he could just do without much problem because of it(we know how it turned out with mio tho).
@Grenzoocoon https://isekailunatic.com/2016/01/07/chapter-68-depressing-night/ this is before the beginning of the battle at stella fortress if you want to read from the beginning of this confrontation.
https://isekailunatic.com/2016/01/22/chapter-75-their-identities/ this is right when Makoto changes his armor to the red speed clothes
I love it, finally “..Just Talk” happened. It didn’t work of course, but at least it happened. Now he can punch them into the stratosphere for all I care.