He is passionate about competitive programming.

Please be very careful of one-click fraud.

Be careful of one-click fraud and avoid clicking on links recklessly.

Understanding the concept of exergy is important for maximizing energy efficiency.

Mr. Sonoita is my best friend.

Gisho is my best friend.

Azusa studies in the library every day.

He said, 'A nameless star comes out in the evening,' teaching me that achieving a goal is not easy.

After many years of effort, he was finally able to achieve his goal and make a name for himself.

Octans is one of the constellations in the southern hemisphere.