Erika Serizawa

Erika (Serizawa Erika, 芹沢 枝里香)is Youji's older sister and only remaining relative in sweet pool.

Initially introduced via a phone call at the beginning of the game, it is made clear that due to her being pregnant and overall fragile health-wise, she has been in and out of the hospital.

Personality
Erika, having lost both her parents in a car accident, has been the main parental figure for her brother, Youji who was the sole survivor of the car accident. She constantly is worried for her younger brother, who is currently living alone in the apartment they used to share before she became married and moved out. She texts, calls, and emails periodically to check in with him and to see how he's faring now that he's back in school after a long absence due to his own health complications.

She's sweet, soft-spoken and very in tune with Youji's feelings, even if he doesn't go into detail about his internal conflicts.

Relationships
Sakiyama Youji - Her younger brother and only living blood relative aside from her own child. They are a very close-knit pair and she cares very deeply for her brother. Their relationship is very good and she's always eager and happy to help Youji should he be in need of assistance or moral support.