Ikeda Sen (池田 せん, birth unknown – 9 September 1599),[1] or Anyōin (安養院),[1] was a late-Sengoku period onna-musha.

[citation needed] Ikeda Sen's grandmother, Yōtoku-in (養徳院), was the wet nurse (foster mother) of Oda Nobunaga, a major daimyo.

Yōtoku-in's position as Nobunaga's foster mother, exacerbated the wealth of the Ikeda clan and its political influence.

Nagayoshi served the Oda shortly after inheriting the Mori clan and became famous for his monstrous strength and ferocity.

Receiving a noble education, she was skilled in Naginata-do, a martial art disseminated by Japanese women from the samurai family, as a weapon that could be used to protect their homes in times of war.

Nobunaga's son, Oda Nobutada, moved from a nearby temple to make a last stand at Nijō, but was also forced into seppuku.

[4] In 1582, Ikeda clan took part in Hashiba Hideyoshi's forces at the Battle of Yamazaki after the Incident at Honnō-ji, helping defeat Akechi Mitsuhide, who killed Sen's former lord, Oda Nobunaga.

The veracity of these facts remains unknown, but not improbable due to the Ikeda clan being one of the main leaders of the campaign against Akechi Mitsuhide.

The Ikeda clan's decision to support Hidenobu quickly increased tension between Katsuie and Hideyoshi, starting the Battle of Shizugatake the following year.

In the vicinity of the current Nagakute Battle Museum today, Ikeda Tsuneoki and his army of 6,000 soldiers set up a war camp.

[5] After Nagayoshi's death, Sen married one of the three main members of the Toyotomi government, daimyo Nakamura Kazuuji, who was born in Nakamura-ku, Nagoya.

If the speculation that she was present in the Sekigahara Campaign is true, she probably participated in the Battle of Gifu Castle alongside her brother and Fukushima Masanori.

[2] According to Edo's initial manuscript, ''Tōdaiki'' (当代記) or "The Present Chronicles", which recorded income from the rice wages of several warriors, Ikeda Sen received 10,000 koku.

She had land in her own right, her fiefdoms with a recipe equivalent to 10,000 koku, it is considerably high for a warrior, making Sen a possible daimyo.