Yep, that's why it was pointed out by the swimming class teacher that Jiseong was doing his manager a last-minute favor, to drive home the fact that Jaeyi would NOT be sending him there otherwise T_T
I sort of welcome his involvement, because we've seen Jaeyi still not having worked through all the ways his brother has affected his own choices. For sure there will be angst and unsavory interference cause bro seems so self-absorbed, but I imagine this will be an opportunity for Jaeyi to eventually let go of some stuff after his past comes to light and Ideum supports him through it. Again, I'm preparing for the drama, but there's light at the end of the tunnel through it!
Yes! But the new question will be if Ideum mentions him at all to Jaeyi, even in passing as a random guy who helped him out.
We've focused on Ideums past (bcs hes the mc ofc) but this is maybe the introduction to us slowly getting to know Jaeyi more with the root of his issues coming in between something he's deemed his and with the history of his brother taking away all the attention from him, we might see new sides to Jaeyi! Maybe we'll also see how jealous and serious Jaeyi can be about his "fuck buddy" and the whole no strings attached deal
I'm hoping nothing too bad comes from the brother getting involved because we know Jaeyi isn't too fond of him at all. I know for sure that Jaeyi didn't expect his brother to be teaching a class because he would have never referred Ideum there