Comment by Makotoxvii on Mob Shisai Dakedo, Kono Sekai ga Otome Game dato Kizuita node Heroine wo Ikusei Shimasu - Chapter 5

@Makotoxvii It's a manga, so I give it ~90% odds to wind up as one of loli or time skip.  There is a small chance he will remain a proper guardian and wind up with someone else (likely through connections with her, as she's the savior of the world and he would be very respectable in such a hypothetical).  Her impression of him is so strong that she might force the issue when she's older too, effectively dragging him using her status...wouldn't be the first time manga has done it.

If you were to put it on Kalshi, time skip to school where game takes places --> her liking him over the normal romance routes from the game would have the highest odds I suspect.  Something else would be interesting, I guess we'll see what the author picks!