Kotarou (公太郎 Kotarō?) is an ordinary hamster that obeys orders from two female telepath from Ninoudefuzoku Middle School.[1][2]


Toaru Kagaku no Railgun

Daihasei Festival Arc (Railgun)

Main article: Daihasei Festival Arc (Railgun)

During the three-legged race, he attempts to ambush Amime under instruction by one of the Ninoudefuzoku participants, a telepath whose ability is limited to only rodents, but Amime swats him aside, angering his instructor.[1][2]


  • Kotarou is the only named hamster during the three-legged race. Including him, six hamsters were involved in the race.[1][2]


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