
Well, they didn’t trust him. Until they were given food. Yeah, it’s bad logic on the kids part to trust the stranger after they are being well taken care of, but they’re kids. Just because they’re only 5 doesn’t mean they can’t have well developed brains and don’t understand the concept of selflessness and understanding. If children are raised correctly, you’d be surprised at how their brain grows. Don’t underestimate kids. Remember, we were all one at one time, and some of us just “grow up” faster than others.

I have four younger siblings, I know what I'm talking about, don't worry. Yeah, kids are often severely underestimated on how much they understand but also overestimated. It's a bit difficult, but especially when it comes to social stuff they're not good. Especially at five. It's not just that they went "well maybe he's not a bad person after all" (the thought process of that is already so not kid like tho...) but their general behavior. These kids are portrayed as socially advanced but cognitively not, while it's usually the other way around. Kids wouldnt have any big thoughts on this kidnapper maybe being good but crying for their parent. And they most likely wouldn't notice their parent was unwell, and if they'd be smart enough to understand that it's not constipation.
Kids are just so often portrayed as these ditzy cute dumb yet socially smart and innocent beings while they're not at all. This is a thing most manwhas do and it annoys the fuck out of me. Real kids are already annoying but manwha kids are like dumb little pets, maybe even worse
The author really has no idea how kids are like but this isn't it. These kids are FIVE. The should be dumb and selfish assholes. Kids don't talk that way. The way they behave is as if they were ten but the level of what they understand as if they were two.