Choku-Funsha is a shop in the Waiting Room responsible for the Research & Development of equipment, managed by Kommodore Suzuki. If you give him Blueprints found in the Tower of Barbs, he will be able to develop mass-produced versions of that equipment to sell in his store. He charges Kill Coins for equipment, though also uses SPLithium for R&D.
Gyaku-Funsha is a similar shop that can be found in the Tower, operated by Suzuki's twin brother, Kommodore Kawasaki.
Kommodore Suzuki will permanently sell any weapons or armor that the player has developed at his shop. After purchasing an item, there will be a Restock time to wait until the item will be available to purchase again. If you wish, this time can be bypassed by using 1. The player can also sell any item to him from their Death Bag or Storage. Typically selling is not very profitable unless selling things like Golden Beasts. If the player has any unknown Bluprints in their Death Bag when they visit Choku-Funsha, Suzuki will automatically take them and develop a prototype.
Once Choku-Funsha has the blueprints, the player can check what they need to R&D an improved version, as well as view what the improved stats will be. This will cost varying amounts of Materials, SPLithium, and time. Once started, development time can be anywhere between a few minutes and a few hours. If you wish, this time can be bypassed by using 1.
By strengthening your equipment at Choku-Funsha, you'll also upgrade your Funshots. These are a passive ATK boost to your weapons, and a passive DEF boost to your armor. They apply to any gear that you pick up (regardless of if you've upgraded it yourself), as well as to your TDM Defenders. You gain Funshots whenever you finish researching a new tier of an item, or when Uncapping it. This means that the majority of items will grant you Funshots up to 5 times. The passive buffs from Funshots are not reflected when looking at item stats, the buff is only shown at the bottom-right of Choku-Funsha. Regardless, Funshots are a permanent passive buff that will always be active, no matter which Fighter you're currently using. Not all items will grant Funshots; most event gear is excluded. Depending on the type of item, different amounts Funshots will be granted, as shown in the table below: