Yuujirou is a fierce and arrogant man. He shows no mercy towards anybody, as he views mercy as a "weak" trait. Yuujirou is also emotionally manipulative - this can be seen in his relationships with his son and Emi Akezawa, for example. He seemingly lives only to fight and cause destruction to anything and everything he can. His whole life and mindset are dedicated to nothing but fighting and growing stronger with each person he defeats, sometimes killing them. He tends to kill people if pushed 