Eriri Spencer Sawamura is a Japanese-British individual with blonde hair typically styled in twin tails secured by blue ribbons, blue eyes, and pale skin. She stands 158 cm tall with measurements of 80-56-86. Born to an English diplomat father and a Japanese mother, she comes from an affluent family residing in a mansion. Her childhood unfolded primarily in Japan, where she formed a close bond with Tomoya Aki. During elementary school, she immersed herself in drawing, often neglecting studies, using it as a coping mechanism to overcome personal challenges. Tomoya bestowed nicknames like "Eririn" and "Queen of England" upon her. At school, she maintains a refined, sophisticated persona, earning admiration as one of the most beautiful and popular students. This contrasts with her secret life as a hardcore otaku and doujinshi artist operating under the pseudonym "Eri Kashiwagi" for the circle "Egoistic Lily," where she creates adult-themed manga. She employs disguises at conventions to avoid recognition. Only Tomoya knows this dual identity, which he occasionally leverages. Her artistic talent was significantly shaped by her otaku father and fujoshi mother. Her personality blends tsundere traits with emotional ferocity. She blushes easily and struggles to admit romantic feelings for Tomoya, often reacting with anger or physical aggression (like hitting him with her twin tails) when embarrassed or jealous. Fiercely determined, an insult from Akane Kosaka labeling her art as mediocre drove Eriri to overcome an artistic slump through relentless effort. Despite klutziness, she exhibits underlying kindness and generosity. Her rivalry with Utaha Kasumigaoka stems from mutual recognition of talent and competition for Tomoya's attention, though professional respect develops over time. Professionally, Eriri joined Tomoya's doujin circle, Blessing Software, as its illustrator. She later departed to work with Akane Kosaka on the game "Fields Chronicle," believing Akane's harsh criticism would push her artistic growth further than Tomoya's supportive approach. This decision caused emotional strain but reflected her commitment to evolving as an artist. During events depicted in a movie, a crisis emerged when Akane suffered temporary paralysis, jeopardizing their project. Eriri and Utaha sought Tomoya's help to negotiate a deadline extension, leading him to temporarily abandon Blessing Software. Through this collaboration, Eriri reconciled unresolved feelings for Tomoya and accepted his relationship with Megumi Kato. She later assisted Blessing Software in completing their game for Winter Comiket. Her friendship with Megumi evolved from initial dislike to mutual trust, with Eriri eventually using Megumi's first name. Though strained after leaving Blessing Software, they reconciled. A post-credits scene reveals that ten years later, Eriri works as the illustrator for Blessing Software's company, alongside Utaha as the writer, under Tomoya and Megumi's leadership. The original circle members reunite to create new games, signifying enduring professional and personal bonds.