The Male Lead's Maid

Bell realized she was only an unimportant character after transmigrating as Bell Gratia, a character who didn't even appear in the original story she read.

However, she was planning to save the male lead, her favorite character, who is the abandon illegitimate second son of his family before he became the Duke.

She wants him to have good memories, even if it's just a few, to help him cope with the pain he's been through.

Despite his suspicions and coldness toward her, Bell finally managed to melt the ice in his heart and break down the walls he had built around him.

"Promise you won't leave me?"

"I promise, young master."

Of course, that promise is only valid until he gains power and, as in the original novel, meets the Heroine.

She doesn't expect him to be that obsessed with her, though.