Upotte!! is an original net animation (ONA) that is based on a manga by Kitsune Tennouji, and it made its debut on April 8, 2012.

Upotte!! is set at Seishou Academy, which has elementary, middle school and high school classes. The main focus of the series is on students at the middle school campus. A newly transferred male teacher named Genkoku discovers that there's more to the students than meets the eye. While the girls are expert shooters, and practice shooting guns every day at school, they are also anthropomorphized guns. Unfortunately for Genkoku, he is the only actual human character in the series.

Funco is a Belgian FN FNC, and is the main heroine of the series. She's small and energetic, and tends to react violently when Genkoku says something he doesn't mean. However, Funco does care about him, and even dreams of him choosing her as his personal weapon. Those dreams tend to include dialogue that uses gun euphemisms for sexual concepts. Funco also has an older sister at the school, a high schooler named Faru.

Ichiroku is Funco's best friend. She has a rough personality, but she is also kind. Ichiroku is an American M16A4 assault rifle, and her older sister, 14, is also a high school student at Seishou Academy. L, a British L85A1 assault rifle, is shy and clumsy. Sig is a Swiss SG 550 assault rifle. She gets good grades, but she can be a bit flaky at times.

In addition to the gun euphemisms that appear rather frequently in the dialogue, I also saw at least one panty shot, several hinted at "upskirt" shots, and one instance of one female middle school student grabbing another girl's breasts. All of this content was contained in the first episode of the series.

Even though Upotte!! has cute-looking animation and main characters who are middle school students, the actual content of the series is definitely not being aimed at a young audience. This series is being aimed at a segment of anime fandom that appreciates these kinds of shows, and I'm not part of that segment. And since I'm not part of that segment, I didn't find any enjoyment in Upotte!!

If you enjoy anime series with the type of content that Upotte!! has to offer, then you will probably enjoy it. If you know that you don't enjoy anime with this kind of content, then it's probably best if you steer away from it.

Personally, I would recommend Upotte!! to anime viewers who are 17 or 18 years of age and older.

Title	Episodes	Release Year(s)	Director	Studio	N.A. Licensor
Upotte!!	10 + OVA	2012	Takao Kato	Xebec	Sentai Filmworks