@Sofa_King_Cold there was a manga like that. Mc's childhood crush kicked him out her party cause he wasn't getting stronger and accidentally sent him to an area protected by a dragon MC survived but spent 3 years thinking she did it on purpose and grew stronger with the sole purpose of crushing her party cause she didn't even check up on him even once while he was in the hospital. Her party still managed to become an S rank party without him but he became an S rank by himself and no longer trusts people while she's trying to find a way to apologize for the misunderstanding
Comment by Ian Moone on Sofa_King_Cold
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@Ian Moone Yup, I am reading that one. In the two years since this comment the proposed scenario has become more common. Besides the one you mentioned there is also the one about the trap master and the one about the fief trainer.