鹿島が珈琲を入れるの、コッソリ見ていた電ちゃんは 見よう見まねでコゲ茶色の飲み物を、司令官さんに飲んでもらうことにしました。

During the long journey of learning to make coffee, Inazuma-chan stealthily watched others make black tea colored drinks, in order to give Commander-san a drink that he would accept.