I don't want to be a Main Lead !

When an average guy was transmitted to his Sister's favorite Love Sick Yandere/Romance Otome game as a side character. He thought he would be living a stressful and relaxing life because the game mainly focuses on main characters. But somehow He charms the Targeted Characters, heroine and villainess by mistake!!! What will he do now? Will he find a some way to escape from these love sick yandere characters or Die in the process?