Lime-iro Senkitan is a tV series anime that premiered in winter 2003.

About the production: the story comes from a visual novel, there are 13 episodes of about 25 minutes and its current status is "finished".

Its main genres are comedy, ecchi, mecha and supernatural, with themes such as Female Harem, Primarily Female Cast, Military and Ships.

On AniList, Lime-iro Senkitan has an average score of 54%, an average score, and appears on 2,928 users' lists.

The franchise continues in or follows from: Lime-iro Senkitan: Nankoku Yume Roman and Lime-iro Ryuukitan X CROSS: Koi.

Around the the 37th year of the Meiji Era (1904) in the midst of the Russo-Japanese war, the small Japanese army, in need of assistance, uses its special flying (thanks to a benevolent demon) ship, the Amanohara, to attack Russia's major base at Port Arthur (Lushun). Umakai Shintaro, a Russian diplomat originally from Japan, defects and goes to Sapporo to teach at a girls academy. However, that girls academy is not typical - it is on board the Amanohara, and the five girls Shintaro teaches are known as the Raimu Unit - girls with the ability to summon powerful beings to fight for them. Shintaro eventually becomes their teacher and general in battle, and so the six embark on a weird and excessively erotic journey, as Shintaro helps the girls overcome their weaknesses, become stronger for the final stand at Lushun, and also understand the motives of the "Russian Spiritual Corps" that assist the opponent, which, unfortunately, has one member whom Shintaro knew well... (Source: Anime News Network)

Official synopsis from AniList.