Kogorou is the assistant instructor at the Suzuhara-ryuu Kendo dojo in Minoudai. He lives alone at the top of a hill and his osananajimi Mahiru comes to wake him up every day, even though she knows that he will already be out of bed and dressed by the time she gets there. That’s because she is like many other girls who has fallen in love with him because of his honesty and seriousness. He is known as the ‘man who breaks flags’.