Mahoutsukai to Hoshifuru Niwa

Upon her acceptance into a prestigious academy for magicians, Rio is immediately tasked with venturing out to find a familiar of her own. However, her search quickly goes awry when she becomes hopelessly lost and crosses paths with a kind-hearted young man named Kyle. Captivated by his gentle nature, Rio finds herself developing genuine feelings for him before resuming her quest. During her continued search, Rio unexpectedly encounters Arushel, a fugitive belonging to an ancient demon race. He is desperately fleeing from the Witch of the West, who intends to claim him as her own familiar. To escape her grasp and unlock his true form and latent powers, Arushel forces a kiss contract upon Rio, binding them together. This desperate act incurs the wrath of the Witch of the West. Enraged that her beloved Arushel has been taken from her, she retaliates by cursing Rio with a sorrowful love spell. The cruel enchantment dictates a devastating condition: whenever Rio is in the presence of the one she truly loves, she transforms into a boy, threatening to keep her forever apart from the person who captured her heart.