Standing Next To You - Chapter 383: Trust me, Grandma

Feng Lingxi was the traditional family’s head mistress – a person with a charismatic yet sly personality with the ability to attract people easily to her side, and having the potential to take someone’s soul away. Crossing across boundaries from a decade ago to now, a world that gives woman full respect and acknowledgement….

Don’t be fooled by her, because she was someone who would act obediently in front of a crowd but, stabs them in the back when necessary! Disguising as someone that would gain her trust and belief! That was why the Emperor of Xian started doting on her, allowing her to become absurdly daring to do whatever she liked. This made the Empress speechless to tears.
That would be the cause of the kingdom’s downfall in the near future…

- Description from Novelupdates

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

Rural and lost for seventeen years, the illegitimate daughter of the Lu family has returned, and everyone looks down on her, waiting to see her make a fool of herself.However, as soon as Lu Sheng opens her eyes, she pins the rumored ruthless and shady Master Li onto the car with a kiss, boldly declaring, 'Don't worry, I'll take responsibility.'When the gentle girl's disguise falls, everyone realizes that the mysterious jewelry designer, the top disciple of the chief Chinese medicine practitioner, the behind-the-scenes shareholder of a leading group... turn out to be her!Leaders from various fields show up to recognize her, world-class piano master, domestic scientific research leader, genius young hacker, all stand up to say: 'Sheng Bao, we are here to protect you!'Her stepmother and malicious sister weep in regret, her scumbag fiancé bitterly regrets, and her five brothers hurry to make amends, vowing to spoil their sister to the heavens.Yet, Lu Sheng has long been encircled by a certain man, who whispers in a low bewitching voice: 'Sheng Sheng... You enticed me, so now you have to take full responsibility.'

“Jiang Yu transmigrates into a novel and becomes a side character in the book.