Stumbled upon this and saw it was made by DMM, and it's really similar to Touken Ranbu, if not, they're entirely the same except for some elements. You have your own 'citadel' and care for buddhas instead of swords, each character has their own rarity (similar to Touranbu's rng system in which the timer determines the rarity), but in this game you don't smith, you actually have gacha to have these men in your household. Gacha is pretty considerate in my case, just 3 pulls in and they gave me a shit ton of 5* characters. Gameplay wise, it follows the node system in touranbu, either you fight an enemy, get a green node and in the end, fight the boss. You semi-operate them with their special moves. So far, I'm actually enjoying it and would be playing more. Recommended for saniwas who are tired of grinding materials for their touken danshi that never comes home (jiji just give me another copy). Ask me if you need help, but I am also trying to figure it out as well.