These was mean't to be their official costume as their default but instead these are considered as their class outfit meaning the type of fighting attire they wear but they only wear this if they return to the villages where they were raised here are their outfits they wear only for reuniting with their masters and their fellow Shinobis/Ninjas and Focus Warriors.

Outfit Descriptions
Ferdinand's shinobi attire consisting of having a blue ribbon headband tied on his forehead, a dull blue scarf on his neck, a blue vest top, black elbow length fingerless gloves with blue elbow pads, and blue arm guards, blue hip and thigh exposing wide ninja dogi pants and fastened by black belt, and wears a black toeless and heeless foot wear with blue armored shin pads.

Senriel sports on wearing a Shaolin themed attire or similar to Sun Wukong or The Monkey King, his attire consist of remaining topless, having 2 long strands of hair on top of his head, a gray curly armband on his biceps, a green gauntlet on right hand and a white cloth bandage on his left wrist, green gi pants with torned bottom part and a green flame like design on the pant's left knee and right hip, the pants is fastened by a grayish belt, and finally has white bandages wrapped on his shin and remains barefoot.