Never had he experienced heart pain in his life. Human or Demon.
"My Lord–"
"I… I … what did I eat?" He fell on the floor, his bloodlust increasing every moment.
"You are hungry," Sebastian told him with a firm look. "When last did you taste blood?"
"I don't know! I didn't keep a date on the calendar" Vin tried standing up, yet, the emptiness in him, brought his knees back to the ground.
"You better feed on a dose of blood, otherwise, you will kill everyone in this Village!" Sebastian warned him, immediately he saw a fang in Vin's mouth.
"But why hasn't it happened all these while?" Vin finally balanced his step, all thanks to Sebastian's support.
"Always remember this; You are in the body of a Demon lord who feeds on the flesh and blood of Humans. And with half of his 'soul' locked in the Book Of The Damned, the probability of keeping a steady rate of hunger is dangerously low."