text: He is based on Kouta Hirano, creator of the Hellsing manga.  Hirano himself is aware of the related character, writing in one afterword of Hellsing that "Now if you’ll excuse me, I have to go kill zombies at my high school."
  Shizuka Marikawa
  is a nurse at Fujimi High School. At the beginning of the story, Marikawa is nearly killed by a student-turned-zombie but is saved by Saeko Busujima. She has a rather ditsy personality, and her large boobs and butt size is often used as a comical element in the story. She is close friends with Rika Minami, who works as a sniper on the prefectural police Special Assault Team, and she even house-sits for her. The group uses Rika's apartment to rest after they escape the high school. Although she is the oldest of the group at age 27, she is emotionally fragile and does not know what will become of her life. She reveals to Takashi Komuro that she is just a temporary school nurse, and that she is still taking classes and training. Despite this, Marikawa has put her knowledge to good use, and even brings Kohta Hirano to his senses after he had mercy-killed Asami Nakaoka. As the only adult in the group, she drives the bus out of the school, and then Rika's military-grade Humvee.