Natsume Soseki 
Heart 

The novel Heart is a rare excellent work in modern Japanese literature, and still ranks among the top ten favorite works of Japanese middle school students."I" met a "man" and later received a long letter from "the man" (at that time, "the man" is no longer alive), which tells that "the man" with his friend K fell in love with the landlord”s beautiful only daughter in college.The "man" designed to make K suicide and achieve his wish.However, he often suffered from conscience and moral condemnation after marriage, and finally committed suicide.