I've finished reading athe book:, "Confessions of a Mask", written by Yukio Mishima.

It’s “the” here and not “a” because you’re talking about a specific book.

This novel is about a story ofabout a gay guyman.

“Guy” here doesn’t really sound right.

The beginning is about his birth and, how through his puberty, he conflicts with his personality.

It is said the story is based on the author's experiences, and its depictions are really wonderful.

“It is” is commonly written as “It’s”.

There is no doubt that Mishima is one of the best writers in Japanese literature.

In addition, Mishima's lastfinal moment is impressive; he broke into a military base and tried to make a speech and, finally, committeding suicide by cutting open thehis abdomen.

I feel like “final” sounds better than “last” here.