He Was Not on Guard, the White Moonlight Fell on His Heart

Two male protagonists [Redemption/ABO] AB's secret love comes true and he chases his wife. The connotation is unlimited. Gentle, rich, straight man with cancer/turning pure love into wallpaper alpha Melancholic beauty fishing master has everything under control/can read cats' minds beta Jiang Chen's mother died young. He has a reserved temperament and likes talking to small animals the most. He is an ordinary beta in the interstellar era. But he has a beautiful face and excellent academic performance. He went straight to the highest school and became the "white moonlight" of many people. The only person he has had a crush on for many years regards him as his best brother Jiang Chen: ... I don't want to play with whoever wants to be a brother. As a result, the main character who was secretly in love said: Vocal, my wife ran away. / (Suffering from prominent psychological problems will be very obvious in the later stage. Attacking from the back is too big, my wife is really ready to run away)