There are theories in the comments saying that the blonde guy was probably a substitute for the younger brother and I think it kinda makes sense, but I’m not sure about the blonde guy being aware of it or not. He likely chased the uke away because of jealousy, but this jealous might have been caused by both awareness of being his substitute or annoyance due to the important presence of the uke in the seme’s life at that time. I’m pretty certain that the seme had developed deep feelings for the uke in the past, but what makes this story so interesting is that the seme’s feelings are closer to an obsessive brotherly attachment that eventually developed into an equally obsessive romantic and sexual love than actual healthy romantic love. In fact an important difference exists between loving someone and not being able to live without them.
I wish it was longer,
Unholy Night