Tomoki from Yoru to Asa no Uta is Kouki's brother??!!!!

I was reading Yoru to Asa no Uta again and realized that the blonde yakuza dude has a sidekick called Tomoki - he's the one who rapes Asa after he hits the yakuza dude's sister; Tomoki is also shown as one of Yata's friends right in the first few pages of Yatamomo. I don't know how TF I never realized this, but that's Kouki's brother! I saw his name on One Room Angel so many times but I never really thought much about it! AAAAAAAAAAAHHH they look the absolute same too... This makes me feel even worse about Kouki... ahhh... (╯°Д °)╯╧╧(╯°Д °)╯╧╧(╯°Д °)╯╧╧