wow i didn't realize you had vm'd me. sorry.
if i'm being vague, it's because it's been a long time since i saw it. it was average to decent. i actually liked rin as a main character (mc). he was not as outrageously hotblooded or "friendship uber alles" as other shonen mc's, though he showed it at times. the voice actor himself could be grating at times, especially when he screams.
there was an unusual conflict between rin and his brother, but since the anime created its own ending, i don't think the manga will have the same conflict. good art and animation throughout. it didn't have a lasting impact on me as a viewer though. it was just competently-executed shonen.