Thread:Shamanisheee/@comment-27208174-20171211082813/@comment-24661512-20171211091209

From non-official source, revealed in Heisei Generation Final, the Build in True Ending is Takumi Katsuragi, but Sento also have the memory in True Ending as a dream.

So it is not a wise decision to deny Sento as Build in True Ending. We need to keep the current situation and wait for more info from Heisei Final
 * 1) Heisei Final has not been released
 * 2) The true identity of Sento is confusing