Rinsama_'s manga / #fantasy(476)

An ex teacher got isekai-ed to be a young girl who got married off to an old violent duke that had already killed many wives. Fortunately for her, he died before the wedding. She was still made the duchess until the duke's son stepped up and married a woman.

Omgggg crazy possessive yandere half octopus half man and a kind big but a softie mermaid?? SIGN ME TF UP

Fucking interestinggggg.

The previous king has 2 sons. The first was deemed unsuitable to be the rule, so he gave the crown to the second son. The first son staged a rebellion, but lost. The crown prince became king. He had a duke friend who's very good. He's the FL's father. The first prince kidnapped FL when she's young, lied, and trained her to kill the duke, her real dad. She succeeded the first life, but learnt that she was lied to and regretted it deeply. She got a second chance in her second life. She got better, tried to get more info from the first prince's room, thwarted some of his plan.

So MC was an office worker. He's poor, but positive and hardworking. He has a younger sister who's into this one otome game, so he knows the plot too. He has a boss who's close with him. (Bit of a spoiler) One day, he got hit by a car, but his boss tried to save him. They both got transported into that otome game. Anyway, spoiler, the sister was also in that world as the FL.

This so good man. Good characters. Interesting skills. Smart MC.