If the Deep Sea Forgets

What if one day a strange girl with amnesia suddenly ran up to the industry's vicious and cruel ace lawyer and said, "Will you take me in?" OK. The cold and silent barrister's first reaction was of course, I'm sorry, I don't know you, and I don't have that special habit. She woke up from the hospital with injuries, but found that she could not remember anything and there was no one around her. The only person who has any contact with her is the famous barrister who kindly pays her medical bills for some unknown reason. Finally, she finally became his sister, had an identity in this world, and had a place to rest and sleep. She relies on him, because in the world after amnesia, she only has him. And he originally just thought of her as a weak little sister following him. He was afraid of pain and any fighting scenes. So, he protected her... Later, she regained her memory and wanted to leave, but he...