Which Era Did Eiji Tomari Arrive in?

Eiji finds himself in August 5, 2015 in the past. He knows that at this time, Krim will control Shinnosuke/Drive and forces him to destroy a portion of the city, framing his father in the process. As he runs, the NEXTridoron appears but looking at his late father's burned necktie, he has no signs of despair and runs to find Shinnosuke.