Inyubako y'Ibiro Oak Konan Shinagawa ni inyubako y'ibiro ifite amagorofa 12 iherereye hafi y'icyambu i Tokyo mu Buyapani. Urukuta rwo hanze rwera rusa n'urusobe rw'utuzu ni igishishwa cyo hanze cyakozwe muri beto yateguwe mbere (precast concrete), kikaba gikora nk'urwego rushimangira inyubako kandi kikanaba igikoresho gikinga izuba. Iyo hifashishijwe hamwe n'ubwubatsi bw'icyuma bwo hagati, iyi miterere ivanze itanga umwanya w'ibiro udafite inkingi, bigatuma imitunganyirize y'imbere ihinduka mu buryo bworoshye. Inkingi n'imitemeri bya beto yateguwe mbere bikorerwa ahandi hantu maze bikamanurwa bigashyirwa mu mwanya wabyo bivuye hejuru, bikaba byoroshya imirimo ku rubuga rw'ubwubatsi. Amadirishya yo hanze afite ibice byemerera umwuka kwinjira mu buryo kamere bifungurwa hakoreshejwe umufuniko ukurwaho.
Izina ry'umushinga : Oak Konan Shinagawa, Izina ryabashushanya : Kazuhiro Yasufuku, Izina ry'abakiriya : Obayashi-Shinseiwa Real Estate Corporation.
Igishushanyo gitangaje nuwatsindiye igihembo cya feza mu marushanwa yo kwerekana imideli, imyambaro n'imyenda. Ugomba rwose kubona ibihembo bya silver byegukana ibishushanyo mbonera bya portfolio kugirango umenye ubundi buryo bushya, bushya, umwimerere kandi uhanga, imyambarire n'imyenda.
