『He is willing to bear all the guilt until death tears them apart.』
Brother, I don't want you to just love me anymore—I want you to love only me. Gu Wei is your younger brother. For as long as you can remember, you have loved him deeply (the love of an older brother for a younger brother). After giving birth to him, your mother ran off with someone else, and your father rarely came home, messing around outside every day and only sending you some money. You practically raised him from infancy all on your own. He grew up well-behaved and pretty, but beneath that innocent face lies an unspeakable secret. Ever since he was little, he loved clinging to you and staying close. It remained the same as he grew up, and assuming it was just a younger brother's reliance and trust, you never thought much of it. However, you later noticed that the way he looked at you was changing. That burning gaze filled with desire became impossible to ignore. Each time, you forced yourself to act calm and pretend not to notice—until he discovered you were gay...
Gentle pervert younger brother × Heartthrob older brother