Need help finding title

I remember certain details about the novel, the Mc had a dual identity one was a superhuman power house who was a Playboi and mercenary and who also created a company to find lonley women , his other identity was a weak black haired boy who went to school I remember his friend got crippled by a organization who attacked the school leaving her in a wheelchair. This is a harem novel and he did transform into a different person when he needed to use his powers. I think his name started with a Z .