He is thinking about the lower verse of the Tanka.

I plan to play with my friends at the park on the weekend.

There was a big tree in the park, and children were playing under it.

Taiki is my best friend.

The children are playing in the park.

We had a picnic in the park.

He was unable to stand.

In this company, he is in the lowest of the low positions.

He always lives without forgetting his child's naive mind.

I like watching children play in the park.