One Piece: Supreme Check-In System - Chapter 40: Walking Around in Fish-Man Island

As a kind of punishment, the wings of a demon king were cut, and he eventually lost all of his power. To get back his power, he made a deal with the angel. He will go to the realm of humans to find a special girl with a special skill who is meant to be her queen. If the woman got pregnant, all of his sins would be forgiven, and he will regain all his powers. But he didn’t think that knowing her would be an adventure for him as the king of demons in the human realm.

“Gu Hangshen! Your sister stole my man, and you helped her do it! Your whole family is rotten!”“Whatever my sister owes you, I'll compensate you.”“And what will you compensate me with?”“Me.”“...”Later, he not only gave himself up as compensation, but he also came with a clingy little bundle of joy...

What will happen if your ordinary life becomes not so ordinary? What will happen if your old existence becomes anew? What will happen if the world that you know is changing?

Our heroine, Anne, is a 40 year old librarian, that got entangled in mythical magic, inside a mysterious fairytale book. When the disaster happened, she got thrown into another world, the kingdom of Valorian, where magic and lore are coming alive. A world where she becomes younger again, but with a wisdom and knowledge of a forty-year-old woman.

After Gu Jinghe passed through the book, she became a cold and ruthless overlord. The system asked her to abuse her heart and body against the poor heroine, and the world was broken.
The heroine is both beautiful and miserable, Gu Jinghe couldn’t bear it, and decided to put on another vest to secretly compensate her.
She seamlessly switches between old and new identities, and lives like a genius every day.
When she was the overlord, she looked cold and stern, with a mocking smile on her lips, and her fingers raised the heroine’s chin: “Ji Yunyan, the fate of the Ji family is in my hands, you’d better be obedient.”
In her new identity, she smiled brightly, and her voice was sweet and soft: “Yanyan, can I go to your house to do my homework?”
Probably because of her superb acting skills, the heroine treats her with a cold face as the domineering boss, and smiles like a flower at her new identity.
Until one day, when Gu Jinghe routinely confronted Ji Yunyan as the boss, Tian Liang Ji Po, Ji Yunyan suddenly called out her vest name to her.
Gu Jinghe agreed…
Gu Jinghe: Why don’t you listen to my explanation?
Ji Yunyan: (smiling) Make it up, keep making it up.
[The story of two people who thought they were straight but were not so straight flirted with each other, and ended up breaking themselves completely]
(The cover is the persona of Mr. Jing Heba)
Ba Zong and Jiaojiao seamlessly switch between the superb acting skills of Shou vs. the attack of the disguised little white flower

Content tags: system sweet text wear book
Search keywords: Protagonist: Gu Jinghe ┃ Supporting role: Ji Yunyan ┃ Others: Chuanshu, Overlord, Actress
One sentence introduction: I fell off the horse in front of the heroine
Intention: No matter what difficulties you face, you must stick to your own nature and not fall into darkness. the

- Description from novelbuddy