Hifuu Club Activity Record ~The Sealed Esoteric History~ (chinese: 秘封活动记录 ~The Sealed Esoteric History~) is an animation project developed by Chinese circle Kyoto Fantasy Troupe.
The first installment of the series was released on November 24, 2014; and serves as an opening for the series, rather than an actual episode.
On April 15, 2015; a remastered version of the first PV was published on different chinese video-streaming websites.
On October 12, 2015, KFT published a teaser video for their first actual episode, which is expected to be released at Comiket 89.
On November 21, they released a PV featuring the events of Urban Legend in Limbo, showing Sumireko Usami fighting other characters like Marisa Kirisame, Hata no Kokoro, Fujiwara no Mokou and Koishi Komeiji.
On October 2nd, 2014; Kyoto Fantasy Troupe revealed the first teaser for their first animated project.
It features Maribel Hearn and Renko Usami as the main characters. However, the teaser briefly shows animated motions of other characters like: Remilia Scarlet, Yukari Yakumo, Kanako Yasaka, Suwako Moriya, and Reisen Udongein Inaba.
It also shows the creators' own rendition of living Yuyuko Saigyouji and a vengeful phantom Minamitsu Murasa; which is why it's assumed the series will also center in less-common characters' backstories.