An extremely anxious person who can often be seen talking to himself, or even more often through his friend 'Pet-Chan, Mikihiko finds it difficult to talk to others and often stutters when he speaks, gets easily startled by others, and can sometimes be seen on the verge of tears. As a result of the abuse he faced from his sisters, Mikihiko lost all confidence in himself and believes he is 'the perfect person to be bullied.