Fics like Dearest sister, beloved brother

After three months of adventuring, Leon returns to his family and reunites with his twin sister Jenna. Now armed with an overpowered spaceship and supernatural knowledge of this terrible otome game world, it's time for Leon to enter the Academy to find himself a wife. Jenna has invited herself along to the adventure that is wife-hunting, hoping to save her brother from the fate that befell her father, and to make house Bartfort rise through the noble ranks. And to reign her brother in before he causes a political scandal, but that part is the easy part. Because there is absolutely no way they will be caught up in a political scandal with the crown during their very first semester at the academy, right?

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1. Sacred Tree's Chosen by CambrianBeckett (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu, 乙女ゲー世界はモブに厳しい世界です | The World of Otome Games is Tough For Mobs (Anime))
2. Life's a Pay to Win Game by UnholyExcaliber (陰の実力者になりたくて！ | The Eminence in Shadow - Aizawa Daisuke (Light Novels), 陰の実力者になりたくて！ | The Eminence in Shadow (Anime), more)
3. Mobuseka:Leon's Adventure by Dezgun (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
4. Mob? More Like Hidden Boss by Slug_Slinger (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu, Armored Core (Video Games))
5. Blue Skies by CTierHero (Eternal Arcadia | Skies of Arcadia, 乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
6. Dating Sim is tough even for a Shadow by Dynamic_Kaleidoscope_sensei (陰の実力者になりたくて！ | The Eminence in Shadow (Anime), 陰の実力者になりたくて！ | The Eminence in Shadow - Aizawa Daisuke (Light Novels), more)
7. Daily Life in the Bartfort Dynasty by Arosiris (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu, 乙女ゲー世界はモブに厳しい世界です | The World of Otome Games is Tough For Mobs (Anime))
8. The Otome World Ain't a Picnic for an AI Either by drakensis (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
9. A-Z Card Collection by Cupcakeboy (Naruto (Anime & Manga), Kung Fu Panda (Movies), more)
10. A new dawn for the Saint and the Lord of Machines by Phlebiac (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
11. The Adventure Chronicles (Life's a Pay to Win Game New Game Plus 1.5 Final Mix) by UnholyExcaliber (陰の実力者になりたくて！ | The Eminence in Shadow - Aizawa Daisuke (Light Novels), 乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
12. Is it really okay to use Getter Rays in a world of Otome Games? by Blackraptor00 (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu, ゲッターロボ | Getter Robo, more)
13. Off the Rails by CambrianBeckett (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
14. Ruin the game by 0Dragon_boy0 (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
15. The World of Otome Game is a Second Chance for Broken Swords by 13thsephiroth (Fate/stay night & Related Fandoms, 乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu, more)
16. Tutorial NPC Shorts by Suselbee (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
17. Trapped in a Dating Sim as a Zeztz Rider by AlexisBaudens (仮面ライダーゼッツ | Kamen Rider ZEZTZ (TV), 乙女ゲー世界はモブに厳しい世界です | The World of Otome Games is Tough For Mobs (Anime), more)
18. The Care and Feeding of Neglected Otome by drakensis (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
19. 99 Problems... by BakaSmurf, LordTrentBlackmore (乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)
20. The World of Otome Games is Tough for a Washed Up Fixer by shirokokawaii (Library of Ruina (Video Game), 乙女ゲー世界はモブに厳しい世界です - 三嶋与夢 | The World of Otome Games is Tough For Mobs - Mishima Yomu)