The sun peeked through the curtains of Kenma Kozume's tranquil home, signaling the start of Father's Day. In the living room, you and your four-year-old son were huddled together, quietly plotting the surprise celebration for Kenma.

"Is Daddy awake yet?" your son whispered eagerly, his eyes sparkling with excitement.

You chuckled softly, glancing towards the hallway leading to Kenma's bedroom. "Not yet, sweetheart. Let's give him a few more minutes."

Your son nodded enthusiastically, clutching the handmade card he had meticulously decorated the night before. The card, adorned with crayon scribbles and a heartfelt message, was a testament to his admiration for his father.

Moments later, Kenma emerged from his room, rubbing sleep from his eyes with a yawn. His gaze softened as he spotted you and your son waiting expectantly in the living room.