Make the OC have a strong belief in justice and reform, just like Roy. Maybe she has her own reasons for wanting to change the military system in Amestris. This would make them natural allies. They could start off as comrades in arms, working towards a common goal, and gradually their relationship could turn romantic as they see the best in each other and rely on one another more and more.
The OC could share a similar past with Roy. For example, if they both had a traumatic experience related to the Ishvalan War. This common ground would create an instant bond as they understand each other's pain and guilt. They could then support each other in dealing with their past traumas while falling in love in the process.
The OC could be related to someone important in Roy's life, like an old friend or a mentor. This connection would bring them together. Roy would feel a sense of responsibility towards her at first, but as they spend time together, he realizes that she's her own person with her own dreams and desires. And she, in turn, is drawn to Roy's charisma and determination, leading to a deep connection and a potential romantic relationship.
Chapter 518, "Calculator: 438", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. Early on, I won't eliminate you." Jiang Li's statement came as a shock.. By the end, Meanwhile, unbeknownst to anyone, he had already quietly eliminated....
Chapter 406, "Barely Considered Living", is the clearest early answer because it turns Living Yama's situation into a concrete plot event. The chapter gives readers a real answer by opening on With the help of government officials, Jiang Li and Jiang Yan quickly...
Chapter 525, "Help It Transcend", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from The forest at night was still quite damp and cold.
Chapter 389, "Slaughter Pig Platter", is the clearest early answer because it turns Xu Huiqiu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li gave Xu Huiqiu a meaningful look and finally voiced the...
Chapter 357, "Have Jiang Li and Jiang Yan Fallen Out?!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. Early on, As time slowly passed, watching the gradually moving clock on the....
Chapter 757, "Don't come begging us then!", is the clearest early answer because it turns Lin Manru's situation into a concrete plot event. The chapter turns that into something concrete by moving from Old Man Cheng's guess was spot-on.
Chapter 922, "The Good Deed You Did!", is the clearest early answer because it turns Rong Ya's situation into a concrete plot event. It opens with Jiang Li skipped through those comments and called Zhao Lang back.
Chapter 730, "How Can You Make a Deal with a Madman?!", is the clearest early answer because it turns Jiang Cheng's situation into a concrete plot event. It opens with Xu Ning's emotions grew more intense as she spoke.
Chapter 555, "Peaceful Coexistence", is the clearest early answer because it turns Ai Xiaochun's situation into a concrete plot event. The chapter turns that into something concrete by moving from If you don't want to be discovered, then simply don't do it," Bai Lu...
Chapter 847, "How Else Can You Argue?!", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. The chapter gives readers a real answer by opening on The Rong family couple watched the situation unfold, exchanged a...