mamiya_tomosane
Hasaki_Mamiya's older brother and the true protagonist of Subarashiki Hibi.
His appearance is similar to Takuji_Mamiya, but with dark blue eyes.
Takuji, Yuki_Minakami, and Tomosane_Yuuki are his split personalities. He created Takuji and Yuki based on his deceased_brother and crush respectively, while Tomosane Yuuki is loosely inspired on the real Tomosane and his struggle to reclaim his lost identity.