If you're looking for anime similar to The Thousand Musketeers, you might like these titles.
In the year 2205, the past becomes threatened by the historical revisionists who seek to change it. Protecting history becomes the task of a boisterous band of swords that are brought to life, including the glamorous Kashu Kiyomitsu and the kindly Yamatonokami Yasusada. Beyond their battles, these legendary swords from different eras lead charming daily lives.
The characters of both anime are the incarnation of famous historical weapons, and both follow a basic premise of sending small groups from a seemingly endless character roster off on missions.
as someone else sort of said, these two shows are the ultimate bishounen showcases. add to that the element of personifying weapons. one brings to mind the other.
Fight League... the ultimate battle that all fighters shoot for. At this very moment, various brands are holding fiery preliminary battles for the right to participate in Fight League. One of the brands, GGG, is holding the GGG Cup, where fighters use their prized gadgets to win their way to the top. The key to victory is cooperation--"art chains"--between team mates. A girl named G-Wrench, who wields her giant gadget effortlessly, is trying to lead her team, the Boltechs, in pursuit of that dream. But an encounter with a mysterious girl who appears in the middle of a match will change the destiny of G-Wrench, the Boltechs, and all of GGG!
In the year 2037, taking place in Shibuya, Tokyo, LayereD is a platform that uses mixed reality technology to create visualizations of the Internet in the real world. By using special devices, people can have various augmented-reality experiences. Users are able to bring things they imagine into the real world, allowing for a wide variety of self-expression. However, the system does not provide people the freedom it was supposed to, and people actually live in an oppressive society. In the Varna Counter system, harmful creations are eliminated in order to make LayereD "completely clean and healthy." Because users monitor each other to maintain regulations, society becomes rigid and constrained.
Akihabara is known as a shining beacon for otaku culture everywhere. But in a not-too-distant future, that culture is on the decline due to a mysterious affliction causing widespread memory loss. As a result, Akihabara has lost its luster. However, in one of the few remaining otaku shops, Izumi and a handful of comrades hatch a plan to restore lost memories and return “Akiba” to its former glory.
The battle between America's elite military force against the ruthless and power hungry terrorist organization COBRA enters a new chapter. A new covert team of Joes, SIGMA 6, has been created to hunt down COBRA and stop each and every one of their insidious plots for world domination.