In the beginning when K, Sakano, and Hiro are trying to decipher Shuichi's hand gestures and body language as to what was the problem of his new creative slump, the English dub of Hiro took Sakano's line when Shuichi gestured of 'falling snow' which in Japanese means Yuki as in his lover Eiri Yuki. It's obvious because after Hiro's dub said 'Yuki', Shuichi pointed at Sakano instead of Hiro for getting it correct.
Shuichi's eye and hair colors are complete different from the anime and even in the manga. Where as, Shuichi truly has dyed pink hair and violet eyes, the OAV gave him red hair and green eyes as the same with Ryuichi Sakuma who also does not have red hair and green eyes in the anime or the manga.