▁and ▁Ok ok oro ire ▁also ▁in ▁ 2 0 0 1 . ▁Their ▁major ▁debut ▁release ▁with ▁T os hib a ▁E MI , ▁Ak ats uki , ▁was ▁released ▁in ▁ 2 0 0 2 . ▁ ▁In ▁ 2 0 0 3 , ▁Hi iz umi ▁joined ▁music ian ▁Ring o ▁She ena ▁as ▁a ▁tour ▁music ian ▁for ▁her ▁ 1 0 ▁date ▁Sug or oku ▁Tour . ▁This ▁tour ▁band , ▁Tokyo ▁Ji hen , ▁deb uted ▁as ▁a ▁fully ▁fled ged ▁musical ▁act ▁in ▁ 2 0 0 4 ▁with ▁the ▁single ▁" G un j ō ▁Bi y ori ", ▁which ▁Hi iz umi ▁composed . ▁The ▁band ' s ▁debut ▁album ▁Ky ō iku ▁was ▁released ▁in ▁November ▁ 2 0 0 4 , ▁also ▁featuring ▁his ▁songs ▁" Gen j its u ▁ni ▁O ite " ▁and ▁" Service ", ▁followed ▁by ▁the ▁Dynam ite ▁tour ▁in ▁early ▁ 2 0 0 5 . ▁Hi iz umi ▁decided ▁to ▁leave ▁the ▁band ▁after ▁the ▁tour ▁to ▁focus ▁on ▁his ▁work ▁with ▁Pe ' z , ▁and ▁announced ▁this ▁on ▁July ▁ 1 , ▁ 2 0 0 5 . ▁ ▁In ▁ 2 0 0 7 , ▁Hi iz umi ▁made ▁his ▁solo ▁debut ▁with ▁the ▁album ▁ 5 + 2 = 1 1 . ▁He ▁also ▁worked ▁in ▁the ▁musical ▁collaboration ▁between ▁Pe ' z ▁and ▁folk ▁singer ▁Su z um oku , ▁Pe ' zm oku , ▁and ▁performed ▁the ▁Ble ach