Kazumasa is my best friend.

This electronic circuit is designed using positive logic.

Positive charge is a type of electric charge of matter.

It's very interesting to learn about the history of the Shōkei era.

Hiragana is one of the characters in Japanese.

I am a believer in Orthodoxy.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

Well then, I'm off.

He is studying late into the night to learn a new computer language.

This computer is using the latest technology.