Ur a beautiful mermaid! And the hashiras are mermaids while the upper moons are sirens

Muichiro: what am I?

Gyomei: praying in the sea

Mitsuri: playing around with the fishes

Shinobu: follows GIYUU

GIYUU:..

Sanemi: sitting in the under water stone

Obanai: looking at mitsuri

Tengen: we're flashy!

Rengoku: smiling