Wearing dresses without complaint even though he never wore them before, letting the maid bathe him just because that's how noble girls have their baths done... this in itself might not sound bad in itself but keep in mind he really didn't want to, not complaining about the high heels even though he was AFRAID of tripping in those things when walking down some stairs, and etc.
Even though he grew up in modern times he let's his parents dictate everything to him, doesn't even stand up for himself in front of the servants like I mentioned in the spoilers, and even accepts it when his maid mentions that his parents will arrange a marriage for him in the future... even though he's mentally a man! And not gay! And spent the first 18 years of his life in modern times! This guy is a complete 100% doormat. And the worst thing is that he doesn't like some of this stuff (including the likely future arranged marriage) but the most he can do about it is lightly (yes, LIGHTLY) complain about it in his head. He's not just a beta, he's a cuck.
said elf princess will in a later volume tell Satou that he needs to make a harem before she can marry him since his awesome genes must be passed down in quantity and humans can't reproduce with elves.
gave the prince an awesome reason you suck speech
while the voice did advise her to bury the hatchet with the heroine she never expected the MC would take the opportunity to befriend her
Eventually her economic successes reach the point that Ryuze doesn't want the territory to lose her and ceases to pressure her to find a marriage partner. By this point however, she has fallen in love with Ricardo and wants to marry him regardless of pressure.