Sekkekkyuu AA5100

AA5100 is a veteran red blood cell from the anime series Cells at Work!, recognized by her flowing brown hair and composed, efficient demeanor. She takes on the role of guiding newcomers who frequently lose their way—most notably the perpetually lost AE3803. While her knowledge of other cells' specialized roles has its limits, her unwavering warmth and steady encouragement make her an indispensable role model whom rookie cells look up to with great admiration.