Senki Shu (戦姫衆) or the War Princesses is a non-playable faction of bosses that appeared in events for Senran Kagura: New Wave.

They were formed by Hyōki due to her hatred for her sister, Leo. However, Hyōki did not appear until the G Burst update. Prior to that, Miki was assumed by fans to be the leader of the faction.

All of the members are violent and evil, and they aim to harness the power of Yōma for their own ends. Ex. Hyoki, Reki, Maki, Yuki, and Miki.

They do not all go to the same school, and are not even all students.

All current members have the kanji for "Princess" in their names.