He was my former host, a very trustworthy person.

The commoners were envious of the royal family's lifestyle.

I still can't get the memories with my ex-girlfriend out of my head.

Hypervitaminosis occurs when the intake of vitamins is too high.

In math class, we learned about the concept of union.

Kazumoto is my best friend.

Senwa is my best friend.

According to the traditional Japanese calendar, what is today's date?

Kazumiko is my best friend.

Kazutoshi is my best friend.