I Saw, I Learned, I Conquered

This story is only fictional. If there are similarities in the names of characters, places of events, or stories, it is a mere coincidence and there is no intentional element. Or maybe, there is. (ﾉﾟ0ﾟ)ﾉ~
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There was a boy, his name was Johan. He once had a terrific innate talent. His eyesight far exceeds human vision in general. Not only did he have extraordinary eyesight, but his excellent memory and reflexes also made him hailed as a genius.
Bored that there was no rival at school, Johan started playing fps games, which was his forte due to his eyesight and reflexes.
After graduating, his life began to change after learning that his eyesight had started to deteriorate. He tried to check with an ophthalmologist, but unexpectedly, the doctor said that his eyes could not be guaranteed to be healed even though using surgical methods.
He started to lose confidence. And from then on, a series of misfortunes began to be encountered one after another. Accused of robbing by his uncle, went to jail for a month, then his parents divorced.
He went to China with his mother to start a new life. And one day, he began to know the existence of supernatural and superpowers.
How will Johan deal with those who have those powers when he is just an ordinary young man? Will Johan try to heal his eyes with the help of supernatural powers?