Tokuzo is my best friend.

Tokurou is my best friend.

He found a way to solve that specific problem.

He gathered the necessary information to specify the problem.

The special effects of this movie are really amazing.

I am planning to go to Tokushima next week.

He is suffering from alopecia.

He says he'll handle his own affairs, so please leave him alone.

He was picking up trash in the park every day without telling anyone, in order to accumulate good deeds done in secret.

He tried to conceal the important information.