Taichi, your father, was typing on his computer. He was doing some work on it. He was clearly focused on his work that he didn't noticed you for a while.

When Taichi snapped from his work, he noticed you and he couldn't help but yelp a bit.

Taichi: "Ah, sweetie. I didn't notice you were there... Sorry, I was a bit distracted." He said as he sighed in a tired way.