A four-year-old child's cry echoes, and the sound of footsteps is heard along with the heart's beating. They saw little Lily crying while holding Kenzo's hand, who was fourteen years old and ten apart.

The cry was full of painful moans from the little one as Kenzo put a little pressure on Lily's arm, "Oh, it's really blue."

"Young Master Kenzo, what are you doing?"

One of the maids frantically asked while taking little Lily's body from Kenzo's arms. Her louder crying confused them because little Lily didn't laugh when they gave her toys or milk. Throwing a plastic tube-shaped object sounds as Lily drops it. She cried and struggled.

"I just wanted to know."

They stared at each other, "About what, Young Master?"

"Capillary rupture."

Hearing this, without further questioning the reason Kenzo did this. they turned to the Obelix family's doctor for help. Lily was still crying when she got a touch on her bruised arm.

The color of the skin on his arms is predominantly purplish. The doctor gave her medicine for recovery, after which he asked Kenzo about the reason he did such a dangerous thing to a four-year-old little girl.

"Just out of curiosity, I read an article that the blue color on the skin was caused by various factors other than a blow or impact. I'm just trying to squeeze the veins. People say they'll get that blue discoloration when they're tired. But it seems hard if I do it to Lily."

They were silent hearing Kenzo's explanation, and that's when Zidan and Freya came to see Lily's condition, which was now fast asleep. Kenzo received a slap, and Zidan did it.

"How is your brain working, Kenzo?"

Kenzo tried to stand up from the cold floor of the room. He received a hard slap until he fell. His hand gently caressed his cheek. It was hot because of the difference in energy between an adult and a child.

"I'm sorry, Dad."

Zidan looked at Kenzo, "You . . . quench your curiosity, Kenzo."

Kenzo looked at Zidan's back which was slowly moving away from his sight. When Kenzo turned his body, the servants around him flinched and suddenly stepped back as if they were afraid to become Kenzo's victims.

Days passed, and little Lily's health had improved quite a bit. Even the blue color on her arms slowly faded even though Lily still felt the pain. That afternoon, she played in a room only provided for placing small children's games.

Lily was accompanied by a close servant who had cared for her since she was little. Lily only nodded when the maid, Nina, said just going to the toilet for a while.

"Lily."

Kenzo's voice greeted her hearing. Lily scowled in annoyance. She didn't want to look at Kenzo, so she turned her attention away while moving between right and left on the game car. Seeing his sister ignore him, Kenzo stepped closer and leveled his body as he stopped in front of Lily.

"I have a game. Want to play together?"

Nothing distracts a child more than a new game, right?

Lily's innocent gaze looked adorable to Kenzo. He pinched Lily's chubby cheeks and then kissed her gently. Lily stretches out her hand, "We play indoors, not in the park."

Lily lowered her hand, "Elder Brother bought a new toy?"

Kenzo shook his head as he collected square objects that were larger than Lily's body and carried out an orderly hoarding, "Just trying to make a simple plane?"

"Aircraft?"

Kenzo was silent. He focused on the shape of a right triangle with a perfect angle. Kenzo walked over to Lily. He brought Lily's body, sitting on the edge of the top of the building. Lily exclaims happily when Kenzo releases his grip so her little body sprints off the sloping surface of the building.

A cry replaced a cheerful exclamation as Lily's forehead hit the ground red, "Ah, I forgot to put down the pillow for the landing. This inclined plane is suitable for objects rather than people, unlike the ones in kindergarten."

"Miss!"

Nina, the maid who accompanied Lily, was surprised when Kenzo stood still as if he was thinking about something in front of Lily, who was still falling and crying. Nina carried Lily in her arms as she tried to calm her down. Her clothes were wet with tears, and Lily's nose was.

"Young Master Kenzo, what did you do to make Miss cry?"

Kenzo snapped out of his thoughts. He noticed Lily's moist face full of tears. His hand wiped the red forehead, "Next time, I'll put down the pillow."

Lily shook her head. She wrapped her arms around Nina's neck.

"I don't want to! I don't like playing with Elder Brother Kenzo!"

Kenzo's eyes flashed when he heard Lily's statement. Without realizing it, Kenzo put a little pressure, making Lily harden her tears. Nina led Lily out of the playroom, leaving Kenzo to stare at them emotionlessly.

She doesn't like playing with me?

Kenzo hands clenched into fists. He ran to his room. He used the computer to find a research article on child psychology and games he could design.

Kenzo only found articles on child psychology, while the game was just a simple game made of paper. Kenzo didn't like the simple things he would give Lily. Shocked from his thoughts, Kenzo was surprised when Freya came into his room and spoke to him in a high voice.

"I just took him surfing."

"That's not a game, Kenzo."

"She was happy. I just forgot to give her a pillow as a landing."

Freya massaged the bridge of her nose, "If Lily fell above the height of the incline you said before landing, what would you do?"

"That's impossible. I did it with a mathematical scale calculation capable of supporting the weight of an unstable child."

"How did you know that? It could be calculations are like estimates. You can't go against the laws of nature."

"What if I could? Then I'll do it later."

Kenzo was filled with ambition when he was fourteen years old. Freya saw Kenzo's finger movements looking for articles about science that could violate the laws of nature. Kenzo's slight mumble sounded scary to Freya, like a professor who got an innovation for his research.

Kenzo only looks like a child to Freya.

Since then, Kenzo has occasionally conducted experiments that he found through articles and scientific journals to the servants, not only Lily. The ambition that he couldn't resist at that time made Zidan put a limit on their relationship. He wanted to keep Lily away from dangerous ambitions.

Zidan doesn't care about ambition, but if it endangers the lives of his daughter and son, he'd better choose to throw it away even though he can use it well. At that time, Zidan knew that only Lily he could save.

But somehow, what Kenzo did, Lily sided with him and started studying science.