What is sarumaru dayu?

Sarumaru Dayu was a female Japanese poet and noblewoman who lived during the Heian period (794-1185). She was a member of the imperial court and known for her poetry, which was often written in the waka style (a type of Japanese poetry with a specific syllable count). Some of her poems are included in the famous poetry anthology, the Kokin Wakashu. Sarumaru Dayu is particularly noted for her melancholic and introspective works, which often addressed themes of love, loss, and the transience of life. She is also remembered for her beauty, and many of her poems make reference to her own physical appearance. Despite being a female poet in a male-dominated society, Sarumaru Dayu was highly respected and is considered to be one of the most important female poets of her time.