Touken Ranbu: Hanamaru - Makuai Kaisouroku Manner Movies

Short animations played before films to introduce theater etiquette.

for someone who has an interest in touken ranbu, I will help you ;)
maybe it's not perfect but I will try my best

first the basic summary, touken ranbu time period is on 2205 A.D. The historical swords were "reborn" as humans and they went into the past to defeat History Retrograde Army to protect the history

now touken ranbu has more than 100 swords or characters

touken ranbu is an original game by DMM that was released on 2015, now they already have
- web browser and pocket ver game [already in english]
- anime,
- manga,
- stage play [2016 - present],
- musical [2016 - present],
- live action [2019], and
- consoled game for PC and Nintendo Switch