User blog comment:B214/General Discussion/@comment-27180505-20170331135923/@comment-30924344-20170401001032

Actually I can give proof why my theory is instead fact. Take Saji. In his fight with Loki in Volume 7, his left eye transformed temorarily into Vritra's eyes from using his power after Saji gained two more Sacred Gears of Vritra which awakened his conscious. Since the left eye thing was unwilling on Saji's part, that means as there is an opposite to everything, Saji can also willingly do the same if Vritra allows him to. If Ishibumi wrote that sacrificing or gaining the flesh of a dragon is the only way, it would contradict Saji's case where he did not sacrificde his left eye as if he did, his eye would still be that of Vritra's.