Sisters are in love with the older brother they admire, even though they are older than each other. - The older sister ``Sumire'' grows quickly and has thick hair, and the younger sister ``Ichika'' is innocent and active. - Since childhood, she has been pranked by her cousin, and pleasure has been etched into her small body. - Sisters who have reached puberty also start playing pranks on their cousin! - Using her tanned body as a weapon, she openly invites him, arousing her lust and making her lose her reason. - *There are no performers under the age of 18 in this work.