Caged by Love, I Am Just Her Shadow

(Sadomasochism + romance boss + nurturing + secret love + single female protagonist + strong female) He kept Shen Xingyao by his side initially because she resembled the old friend in his heart that he never wanted. He gave her stability, protection, and a preference that no one else could touch, but he lied to himself that this was just pity for the shadow. He weaved an airtight cage with tenderness, trapping her year after year. He thought it was a similar face that was trapped, but it wasn't until she turned to leave that he admitted like crazy—— What he fell in love with was never a substitute, but the living Shen Xingyao in front of him. What started as a substitute's approach ended up being a deep love that is irretrievable. He trapped her for a long time, and in the end, the person who couldn't get out of the prison the most was himself.