what's STOPPING them from seeing a gigantic fucking dragon corpse as well as the environmental damage it caused?
also, they KNOW he woke them up and that he DIDN'T DO ANYTHING.
and why go through all the trouble of gaining their trust and risk failure anyway if you can just kidnap them while they're unconscious, lift the curse afterwards and use them as political bargaining chips?
none of this makes any sense and is way too risky as well as ignorant and stupid.
also, most of them distrusted him before going through a lot of unnecessary drama (the exact thing i complained about) which finally made SOME of them trust him.
even if they're not bothered about the kisses itself, all these shenanigans were unnecessary for the most part. they know they were asleep, they could easily check if he's actually killed a dragon and they know he could've kidnapped them or done worse.
and yes, seeing how the mc's father behaved, you could immediately tell he had conquest in mind (maybe even mentioned it - i forgot). so while the girls may be inherently wary of the neighboring kingdom's forces, all of the above things (especially allowing them to go free instead of kidnapping them) make no sense whatsoever if he wanted to harm them or even if he was indifferent to them. instead they showed that he genuinely wanted to help them.
but it's a shonen manga, which usually has a lot more bloated drama than its shojo counterpart, so i shouldn't be surprised.