Game is now live on both DMM and Nutaku platforms. Any questions that can be easily answered go here.

DMM Otogi: http://pc-play.games.dmm.co.jp/play/otogi_f_r_en/
Nutaku Otogi: https://www.nutaku.net/games/otogi-frontier-r/play/
Twitter: https://twitter.com/GlobalOtogi/