He was affected by secondary effects.

He enjoys derivative works of anime.

Saburo is my best friend.

Where will the second party be held?

Solving a quadratic equation is difficult.

Redistribution of this software is prohibited.

Reijiro is my best friend.

Solving a linear equation is difficult.

Sennenji is my best friend.

He always sticks his nose into other people's business like a busybody.