Ribbons Almark had admitted to perverting Schenberg's vision but Tieria hadn't even dared think that it could be this far reaching. Lockon was dead because of Ribbons.
Tieria missed the real Lockon instead of the echo who wore Lockon's face and name and simultaneously made it clear that he was not his brother. To Tieria there could only be one Lockon Stratos and Niel Dylandy was not Him.
Tieria could change things because he knew Veda's ultimate backup plan could alter time itself, but did he dare to? For Lockon?
Oh Tieria dared alright.
Tieria would do anything for Lockon.