Basically white hair and blonde hair are brothers the blonde hair is in love with mc and knows that mc is in love with ml so the brothers make a deal (couldn't tell exactly what it was) but white hair would ask mc to do the project together and then from that moment on blonde hair would disguise himself as white hair so he could spend time with mc which is what happens and mc finds out on like chaotwr 2 or 3
It's only just came out so only 6 chapters but the picture of the manga and the description shows it's the blonde brother that's also the photo used on the authors twitter the white haired brother is not shown to have any feelings for mc or he wouldn't have agreed to the switch (really hoping that doesn't change in the future but I don't think it will)
Sorry I just realised my massive mistake in typing here "blonde hair is in love with mc and knows that mc is in love with ml so the brothers make a deal"
Should say "Basically white hair and blonde hair are brothers the blonde hair is in love with mc and knows that mc is in love with his brother (white hair) " so the brothers make a deal
Blonde hair is the ml not white hair sorry for any confusion

I bought the raws and from what's there this shouldn't be a love triangle even though blonde is ml. Explaining why would be a spoiler but I can if wanted.