Zankoku na Kimi to Tomo niTo be With the Cruel You; Me and you... the naughty; Zankoku na Kimi to Tomo ni; Zankoku na Kimi to Tomoni; Zankokuna Kimi to Tomoni; 残酷な君と共に; 與冷酷的你相守

The older brother's company is at the verge of bankruptcy. The only way to prevent bankrupts is to depend on his younger step-brother's support. And the stepbrother is intent on getting his revenge on his older brother's bullying in childhood. But is this really revenge?