I love the art, I love the characters. The plot was a little (or a lot) contrived, but I actually sympathise with the reason for Sena's estrangement. People have different levels of sensitivity, and words from somebody special like your beloved and admired older brother can cut more deeply than they otherwise would. That Sena also ended up seperating so fully from his parents does seem odd, but since we lack sufficient info about those relationships there is little else to do but accept it.
Brother Auto Spot