Soukou Musume Senki

Both feature teams of anime girls who have good personalities and fight evil forces. Princess Connect is fantasy-themed, while LBX Girls is sci-fi. 

Both take place in dystopian futures taken over by multi-legged mechanical monsters, and teenage anime girls have to defeat them with mecha weapons. 

Both feature sci-fi anime girls in CGI, and they go on futuristic road trips while also fighting against an antagonistic force. 

Both are about special units of anime girls who fight evil forces with certain weapons. In LBX Girls, they fight with futuristic tech, while in Katana Maidens, they fight with swords. 

Both are magical girl anime that contain multiple references to Japanese culture. 

Both are about a group of anime girls brought together to save the world from evil forces. 

Both feature strong female characters who fight against evil forces. Character designs and action scenes in these two anime are very well-made. 

Both are about an anime girl who ends up trapped in an alternate universe, and fights evil forces alongside her new friends. 

Anime girls fight evil with mecha weapons! Both have good quality CGI and super-strong anime girls.