Episode 0 of the Mini Anime for Youjo Senki.

A little girl with blonde hair, blue eyes, and porcelain skin fights on the front lines of a brutal war set in a fantasy world. What others don’t know is that she’s a reincarnated Japanese office worker who, in his former life, had a ruthless desire to climb the corporate ladder in hopes of retiring to a cushy corner office. After death, Being X decides to give him one last chance to surrender and believe—and so Tanya Degurechaff is born.

However, Tanya is as stubborn and coldhearted as she was in her former life. Furthermore, her goals remain the same—find a way to retire to a cushy life. Instead, she constantly finds herself being tested on the front lines of the most hostile situations because Being X is determined to win her over, at any cost. Both parties are equally stubborn, and could it be that both are equally evil?

[Source: Funimation]

Web mini-series of "Youjo Senki."

The time is UC 1926. The Imperial Army's 203rd Air Mage Battalion led by Major Tanya Degurechaff has won the battle to the south against the Republic's stragglers. They expected to be given a vacation after returning victorious, but instead receive special orders from Staff HQ as soon as they get home. They are told that there were signs of a large-scale deployment near the Empire-Federation border.

Faced with the prospect of a new major enemy, the desperate Empire fans the flame of war.

Meanwhile, an international volunteer army spearheaded by the Commonwealth set foot in Federation territory. As they say, the enemy of an enemy is the best friend you could possibly have. They suffer through misfortune purely out of national interest, and among them is a young girl.

She is Warrant Officer Mary Sue, and she takes up arms hoping to bring the Empire, who killed her father, to justice.

[Source: Crunchyroll]

The button appeared out of nowhere. There weren’t any signs NOT to push it…so the solution is obvious, right? Is it a trap or the start of something new and exciting? The crews of Re:Zero, Overlord, Konosuba, and The Saga of Tanya the Evil will find out when they go from their world to another and get stuck in…class?! See what adorable chaos they’ll get up to in this collection of shorts!

[Source: Funimation]

The 203rd Air Mage Battalion led by Tanya is forced to fight in the southern desert, the front line. In an effort to provide some food for the harsh conditions, Colonel Rerugen sent dried pasta to the battlefield. Will Tanya and the others be able to eat the delicious pasta under the conditions of water shortage?

[Source: ABEMA via AniDB]