As autumn deepened and the trees began to color, his heart also began to change.

There are many beautiful trees in the park.

As their friendship deepened, they built up trust in each other.

His attitude suddenly changed.

Lately, the weather has been getting better.

At that time, I was still a student.

At that time, he was still a student.

He was recalling fondly the summer vacations of his childhood.

Since I started studying Japanese, I have been able to understand more about Japanese culture.

He came to Japan for the first time.