I Promise to Return

He is the scary and arrogant underworld mogul. In one day he became that Yin Yang master's 'slave'. Everyday, he work as hard as a bull and lets people order him around, and he also gets molested till he can't fight back! Also….he should be getting mad but why can't he get mad at that chilly figure? A gorgeous but strange demon's story. The entanglement of the previous life and the present…waiting for you to open