Home›Authors›宮坂えいいち 宮坂えいいち 3 works and 3 volumes in this database. notable works include “スピード王”, “ピンポンタマちゃん”, “弾丸ジープ”. This timeline covers collected publication years, not career start or retirement dates. Sources and corrections 3 Works · 3 vols Publication timeline YearWorksRoleVolumes ?スピード王Author1?ピンポンタマちゃんAuthor1?弾丸ジープAuthor1