May

May is a kirin (cilin), a sacred divine beast that takes the shape of a small, childlike girl but is in truth over eighty years old. In her true form she is a scaled, horse-like creature with white or blue scales and golden horns, able to fly through the sky and call down pale lightning. She first appears attacking Lyle in the forest outside Baym, having sensed the blue Jewel he wears around his neck, in which the recorded consciousness of the Fifth Generation head of House Walt is sealed.

Long ago, as a wounded young kirin, May was healed and cared for by Fredricks, the Fifth Generation of House Walt. Deeply attached to him, she promised to marry him when she grew up, and when he later set her free she left only reluctantly, looking back again and again. When she recognizes his voice and memories inside Lyle's Jewel, she is overcome, and after a tearful reunion in the Jewel's 'room of memories' Fredricks asks her to look after his descendant. Out of gratitude to him she joins Lyle's group, becoming one of its most reliable combatants.

May's personality is aloof, blunt, and distinctly non-human: she cares little for human customs, views war as nothing more than a squabble over territory, and is famous within the party for her enormous appetite, spending nearly all her money on food and sweets and becoming a celebrity of the market stalls. Beneath the flippancy she is loyal and perceptive, gradually learning to live among humans. Because she is not human she barely ages, and she frequently serves as Lyle's flying mount, scout, and messenger, sharing her vision with him through his Skills.

In battle May wields kirin horns grown from her arms as blade-like weapons, fights with superhuman speed and strength reinforced by magic, and unleashes lightning. She can transform into a taller, blue-scaled adult form for a decisive fight. Her duel with the adventurer Marina, who could match and overpower her, ends in a draw that turns Marina into her rival and constant companion. In the war's climax she battles the corrupted black kirin Rumel (Lumel), sacrificing her right arm to help destroy it, and afterward reunites once more with the freed Fifth Generation.