Uhh???

the ending is about.... ummmmm the father tried to run away to his son didn't let him go?

Yeah, as Diana said his father was considering relocating over seas, but his son didn't want him to leave, because in reality, his son is controlling his father. I think.

Ahh i see , thank youuuu ٩(๑❛ᴗ❛๑)۶

Thank youuuu~ i Kind of get it now. I was confused when i saw him laughing in the end. I don't know why he was laughing. So, i guess he was laughing because if the father and son's dark relationship was discovered by the media and got spread all over his father can't relocate?

No problem, I always have to re-read Ogawa's works like five times before I start to get an idea of what she is writing about.... that part confuses me too? I think that his father is afraid of letting the public know what he is really like, and his son knows this and uses this against him because if his father relocated, he wouldn't be able to control his father anymore. so yeah, like you said, if people found out their relationship, relocating wouldn't matter anymore because everyone would know the truth, and his son would be able to have even more control over him... something like that? Fun times

you're welcome (:

I think it is more that the son was raped by his father to the point where he got addicted to it also realizing it made him crazy, so when he finds out the father wants to flee he reacts like this, like "why are you fleeing, you made me into this now we are here together"

I see... Thats probably why he was surprised.
I thought his son was telling the papparazzi that his father is fucking him or something so his father won't leave him.