Toyotarou has been drawing Dragon Ball since childhood—it's basically his routine, sketching after breakfast every day.
Before becoming an official manga artist, he worked in the doujinshi scene under the name Toyble, where he gained attention for his Dragon Ball AF fan manga in the 2000s. When Shueisha came calling in 2012, Toyotarou specifically pitched himself to draw Dragon Ball Super, and they hired him. He took on the official name Toyotaru and never looked back.
His big break came when he drew just two sample pages of Dragon Ball Super. Akira Toriyama was impressed enough to pick him as his successor. Since then, Toyotarou's been handling the manga adaptation of Super, and he's also done character design work—sometimes solo, sometimes collaborating directly with Toriyama. He adapted the Resurrection 'F' film into manga form as well, and drew the Dragon Ball Xenoverse 2 manga tie-in.
Content compiled by AnimeList.moe from publicly available sources.