Transmigrated as the Female Side Character in a Childhood Friend's Redemption Story

An innocent, adorable, sweet-on-the-outside-but-dark-within girl x a fake gentle, real-deviant motherly man

Afterward, every time he wiped her thighs clean with a tissue, he would sigh.

She would look at him in confusion and ask innocently, "Why are you sighing again?"

The male lead sighed again. "I'm such a failure as your male best friend."

He really was a failure.

From childhood onward, he'd been her best friend, her helper, her comrade in arms... and her lover in bed.

To be her best friend to this extent, helping her do her hair when they were kids and bathe her when they grew up, until they wound up in bed... who else could do that?

Their relationship had been ambiguous for so long, and he still didn't even have an official title.

Of course he sighed.

The male lead looked miserable. "Sigh, how am I going to get her to obediently let me go down on her later...?"

(Second edition of the blurb, written 9.22. To be revised.)

Theme: I'll be with you for all eternity