Rita Ainsworth acted as Mashiro Shiina’s roommate and caretaker while studying painting under her grandfather, Adele Ainsworth, in England. Initially envious of Mashiro’s prodigious talent, Rita urged her to abandon painting for manga—a choice that later fueled Rita’s regret when Mashiro rose to prominence. This guilt drove Rita to Japan intending to reverse her advice, but she abandoned the mission upon witnessing Mashiro’s unshakable resolve.

Blending persistence, chivalry, and boldness, Rita enforced knightly principles rooted in her English upbringing, channeling tenacity into both art and relationships. After reconciling with Mashiro and confronting her insecurities over their rivalry, she reignited her dedication to painting, embracing art as a personal passion rather than a competition. Her growth deepened through clashes and camaraderie at Sakurasou, particularly with Ryuunosuke Akasaka. Undeterred by his gynophobia and the interference of his AI Maid, Rita pursued him relentlessly, initiating kisses and defying his aloofness.

With long blonde hair, vivid blue eyes, and a doll-like stature, Rita’s delicate appearance belied her forthright nature, especially in pursuing Ryuunosuke. Post-graduation, she briefly resided at Sakurasou before enrolling at Suimei Art University, later juggling transcontinental studies while sustaining her cross-cultural romance.

As Mashiro’s mentor in practical skills, Rita balanced rivalry with guidance, her journey marked by overcoming envy to forge resilience and self-acceptance. Her evolving bonds—from strained peer to Mashiro’s ally, and from Ryuunosuke’s persistent suitor to steadfast partner—highlight her transformation into a figure of unyielding determination and loyalty.