Hiroyuki Asada made his debut in Monthly Shonen Jump in 1986. He's best known for his basketball manga I'll, which also ran in Shonen Jump. He's a contributor to artist Range Murata's quarterly manga anthology Robot. He's also a member of Aquarius 3 with Shoji Tajima and Takeshi Obata. Tegami Bachi/Letter Bee is his most recent series.