Kakegurui: The Young Lady of the Akana Family

No romance pairings + a heroine with no fixed style + a generous spender

The unfortunate Shen Yue'an, abandoned after her parents' divorce (not really), is forced to seek refuge with her great-uncle in Japan and enroll at Hyakkaou Private Academy, where gambling is all the rage.

Shen Yue'an caught the eye of Ann Sylvia Akana, a young mixed-race demon lord. After seeing through the fake personas of the two nepo babies' parents, she bypassed them and secured the inheritance rights to both companies. Her parents, whose lives grew harder by the day, got into a huge fight and went their separate ways to retire.

One side was a mafia family business, while the other was a traditional financial firm. Shen Yue'an had her share of hardships, too.

But in truth, the old companies were already run like clockwork, and as long as they headed in the right direction, there was little chance of any major problems. So Shen Yue'an, who had retired early, was bundled off to Japan by Akana's elder relatives, who couldn't stand watching her laze around.

Shen Yue'an: This is pretty interesting, just too noisy. (Covers her ears)

Saotome Mary: What's noisy? It's not noisy, not at all!

Shen Yue'an transfers to the school and joins Mary in the same first-year class. The story follows them as they meet their other friends.

Additional note: The heroine probably won't take part in the games very often. Most of the time, she'll be an observer, simply curious about the different games and cheating methods.

Apologies for the out-of-character moments. This is all made up by me and doesn't stand up to scrutiny, so corrections are welcome.

A blend of the TV drama and anime, with most details based on the live-action version.