Zombie Idol (Idolish7) discontinued

After their latest concert, Riku left for a bit wanting to visit someone. little did he know that it might be the last time he saw his bandmates for long time. Maybe if he decided to wait until the next day things would have turned out different. Now he's stuck trying to survive in this zombie infested world alone with one more problem. He was bitten but never fully turned into one of them instead of fully turning it took some of his memories of the last few years, but it helps sometimes and he still looks normal instead of a zombie so there's hope. he's survived this long by himself but what will happen once he run into someone familiar while trying to outrun a group of zombies. Who are they? why do they know me? and can I trust them?
fair warning mentions of blood fighting and other stuff like that.
I don't own anything except for the idea all characters belong to their respectful owners