It drops you into a fight before you've finished settling in, because a 24-episode run of shorts has no time for ceremony. Doris Ruridou enrolls at Teito Academy like a normal transfer student and is duelling other Panzers almost immediately, and the show treats that as completely reasonable. The best part is her older sister turning up as the self-appointed instructor, which means every lesson doubles as sibling needling, and the comedy lives in that gap between princess manners and getting told to hit harder. Every episode is a tool versus tool showdown with a fresh challenger, so the format works like a series of escalating pop quizzes on whether Doris has actually learned anything yet. It's late-90s TV animation running lean and loud, no arc-building, no filler, just the next Panzer with a grudge. You watch it in bites and it never once slows down to explain itself.
Doris Ruridou is a young princess who has just started at Teito Academy. She is also a Panzer, someone with special abilities who fights using a weapon known as a "tool." Other Panzers challenge her soon after she enrolls, and around the same time her older sister turns up to teach her how to fight them. The show is a short-format TV series that mixes action and comedy with mecha and science fiction elements.