This recipe comes from the Manga book Kinou Nani Tabeta? or What Did You Eat Yesterday? by Fumi Yoshinaga. One of the main characters, Shiro, is a hardheaded (though hiding a soft heart within) lawyer by day, who comes home and cooks their meals every night. Use eating apples, not tart cooking apples, for this dish, since not much sugar in proportion to the apples is used. Gala, Fuji and Gravenstein work well. If you plan to use unpeeled apples, select a rosy-skinned one for the best color.