Three of the characters, as of the current nine chapters posted, are clearly not crossdressers unless boobs are easily replicated with magic, but it's certainly leaning towards the hero or the useless mage as the reverse trap / trap, respectively. Also, the loli tag is highly misleading too since none are lolis, at least not yet. Closest is the mage, but she's just a short girl(?) with proportions on par with your average slice of life high school character. A bit misleading with the tags, as of chapter 9. Not spoilering because I'm not a time traveler that knows the answer. My personal biggest sin though; the monster girl tag. Nine chapters, and the only monster girls are the women. Only difference from actual monster girls is that the monster part isn't outside.
Not going to lie though; this is interesting. Grammar could use a bit of work, as there's obvious mistakes here and there like misusing "have" instead of "has", but it's still quite readable. The premise of the protagonist not being the chosen one, but being forced to help said chosen one, is not a common thing. Here's hoping it doesn't get axed or end with a terribly-rushed ending.