Asuka Domon, alias Bobby Shearer, spent his early years in America with Aki until a traumatic accident involving a close friend instilled a deep aversion to soccer. Recruited by Teikoku Academy, he infiltrated Raimon as a spy, tasked with undermining the team. However, witnessing Raimon’s unwavering resolve and unity during matches gradually eroded his detachment, leading him to abandon his mission and join their ranks.

When Teikoku’s coach, Fuyukai, orchestrated a plan to sabotage Raimon’s bus, Asuka defected entirely, choosing loyalty over duty. His journey continued into the Football Frontier International tournament as a member of The Unicorn, where his technical prowess flourished. He co-developed signature hissatsu techniques: Killer Slide, Tri-Pegasus, The Phoenix, and Final Tornado in earlier seasons, followed by Volcano Cut, Death Zone variants, and The Earth. The third season saw him refine his skills further with Volcano Cut Remastered, cementing his role as a versatile collaborator across teams.