Botan Koizumi is a key supporting character in the anime series Yu Yu Hakusho. She serves as a guide to the Spirit World, initially appearing as the one who informs Yusuke Urameshi of his death and subsequent second chance at life. Botan is cheerful, optimistic, and compassionate, often offering emotional support to the main cast. Her role expands as she assists the protagonists in their battles against supernatural threats, using her knowledge of the afterlife and her own spirit abilities.