tsukuba masahiro, viola (pixiv fantasia), pixiv fantasia, pixiv fantasia 1, black legwear, highres, 1girl, 6+boys, blouse, breast pocket, covered mouth, from side, frown, high ponytail, holding, holding behind back, holding sword, holding sword behind back, holding weapon, holding weapon behind back, hood, huge weapon, legs apart, letterboxed, mecha, multiple boys, outdoors, pocket, ponytail, red eyes, red robe, red shirt, red theme, robe, robot, sheath, sheathed, shirt, skirt, spiked hair, standing, swept bangs, sword, tabard, tunic, weapon, weapon on back