A legend states that once, when Hideyoshi was thirsty, he stopped by Kannon-ji Temple in Omi to ask for tea, and Mitsunari, who was a tera-kosho (boy doing the chores of a temple) at that time, served tea.
近江国観音寺にのどの渇きを覚えた秀吉が立ち寄り、寺小姓だった三成に茶を所望したのを出会いとするもの。