This is stupid, the whole reason he wants to be alone is cause he doesn't want those in power learning of his abilities (plus normal people too cause he'll become a pariah) so he's gonna marry a princess and a former heroic adventurer.
On that note both Princess and Aisha make no sense to be this inlove with him. Aisha has about 15 minutes more time with MC then the princess does and it's less then an hour worth of time. And Aisha is a full grown adult at 24ish while mc is 15.... creepy. Yes I know 15 is adulthood here but this age gap is still gnarly.