Talk:Characters/@comment-28419884-20160624141048/@comment-26044227-20160624164020

Heshikiri Hasebe was here since the start of the game on 2015/1/14, so whatever you read isn't true.

As for implementation dates, you can look through all of the older patch notes at Recent Updates from January 2015 until now. Here's a rough ballpark estimate:

Kogitsunemaru: 2015/1/23 Urashima Kotetsu & Nagasone Kotetsu: March 2015 Hakata Toushirou: April 2015 Akashi Kuniyuki: May 2015 Nihongou: July 2015 Gotou Toushirou: ...Honestly don't remember, but it's one of the old Underground Treasure Chest events with a full 100 floors and he would've been the 50F reward Hizamaru: December 2015, with Higekiri a few days later Fudou Yukimitsu: Feb or March 2016, with a War Training Expansion event Juzumaru Tsunetsugu: March or April 2016 Shinano Toushirou: April or May 2016 Taikogane Sadamune: 2016/6/23