Abel washes ashore near Ryo's isolated home, sparking their journey to the nearest settlement. As captain of the Crimson Blade adventurer party and a B-class swordsman, Abel recognizes during the trek from Rondo Forest to the Kingdom of Naitorei that Ryo's swordsmanship far exceeds his own, despite Ryo primarily being a water magician. In his operational base, the city of Lun, Abel guides Ryo's integration into human society by helping him register as an adventurer. Abel then becomes Ryo's primary travel companion and adventuring partner.

Abel carries a concealed identity as the second prince of the Kingdom of Knightley, which emerges amid political tensions involving the Handalieu Federation's declaration of war on the Principality of Inverey. He actively participates in critical conflicts, including investigations into dungeon disturbances where his party battles life-threatening foes like devils and emerging demon lords. Abel collaborates closely with Ryo in military engagements, combining efforts to counter threats from enemy nations targeting their allies and disciples. His leadership extends to strategic decisions during city-wide crises, such as monster outbreaks and political schemes involving rival powers.

Throughout, Abel maintains a pragmatic approach to concealing Ryo's capabilities to avoid political entanglements, despite sometimes contradicting this by publicly acknowledging Ryo's strength while warning others not to oppose him. His relationship with Ryo evolves into a trusted partnership, jointly confronting adversaries threatening regional stability.