Asunaro Park

Asunaro Park (あすなろ園) is a Child Welfare Facility introduced in Toaru Kagaku no Railgun. It is an establishment located in School District 13 of Academy City, and is dedicated to the welfare of its Child Errors; Shigenomori Kazuko is the principal of Asunaro Park, and alongside other volunteers such as the Tokiwadai Dorm Supervisor, provide care and education for them. The establishment is fairly large, having its own playground.

Poltergeist Arc
Misaka Mikoto and Shirai Kuroko stalked the Tokiwadai Dorm Supervisor going into Pizza Hut buying 10 boxes of pizza and discovered that she bought the pizzas for the children in Asunaro Park as she is a volunteer there. They also discovered that Uiharu Kazari and Saten Ruiko are there as well, after receiving bad grades in their last exam.

Here, they discovered that the Dorm Supervisor was in love with one of the volunteers, Daigo, Uiharu and Saten's teacher. A Poltergeist earthquake then occurs during a birthday party for the children. Due to the Dorm Supervisor's quick thinking and leadership, she was able to calm the children before any damage can be dealt. This event made Daigo admire her even more. The four of them did their best in setting her up for Daigo. They were nearly successful in their efforts, but soon learned that Daigo was in love with the facility's principal and is proposing to her. This breaks the Dorm Supervisor's heart, however, she supports his decision.

Asunaro Park was later featured with Daigo and Kazuko alongside the children, looking at the blimp Kiyama Harumi's students presented for her birthday.

Jailbreaker Arc
By the time the Jailbreak Trial was launched by Kyougoku Ryouta, Asunaro Park was planning for an expansion as Daigo wanted to foster more Child Errors into the facility. This plan is the reason Uiharu Kazari joined the event, and she donated the prize money of one billion yen (with a portion allotted to tax payments) to the establishment upon winning. Uiharu would only reveal her motivation to her friends after the fact. During Uiharu's abduction the next day, Shundan Kimi threatened to go after Asunaro Park if she continued to resist.

Trivia

 * It is revealed that Asunaro Park is sponsored by the Kihara Family.