Why did Kaido call Himeko a "childhood friend"?
Man, this chapter was even more annoying that I expected. They could've told Kaido to get lost because he was party crashing, but of course he gets to go fourth wheel on them. I don't even feel much sympathy for him, sorry but I don't think that forcing himself into their group with that smug attitude was the right way to ask for friends.
That little sob story doesn't change the fact that he was being creepy and annoying all this time and suddenly he gets to join their circle. If he tries to hit on Haruki again even after obviously being shown multiple times she doesn't like him, I swear... it's the creepy persistent "love rival" part of him that I don't like.
It's like if this was BokuYaba, Pickup senpai suddenly gets to join Kyoutarou and Anna's circle of friends at a movie and lunch hangout because there were angry jealous guys who were being mean to him and they let him join out of pity. I mean, for all we know maybe Kaido did steal some guy's girlfriend in middle school and they're (rightfully) angry about it.
Oh, and the plot point about Haruki's estranged actress mother has been teased enough already. I hope we can deal with it soon?