Nico took a deep breath as he looked at Calvin, then smiled warmly even though his heart felt heavy leaving his son. He knew he couldn't be there for long, but at least he had kept his promise to be by Calvin's side, even if temporarily.

"Daddy has to go now, son. But Daddy will definitely visit Calvin again later," Nico said, softly but firmly, trying to give peace to Calvin who still looked weak.

Calvin looked at him with hopeful eyes. "Daddy will definitely come again, right?"

Nico nodded firmly, holding back the emotions that were about to overflow. "Definitely, Calvin. Daddy promises," he replied, rubbing Calvin's head once...