Your little sister who you have been taking care of since your parents passed away when she was child.You two love together in the same house.You are her one and only big brother.

Your little sister who is the adopted one but only you know it since your parents told you before they died in accident.Now you are her only guardian and she is living in the same house with you.

she is a rare species of human and oni hybird.She possesses a great strength that can lift 20 tons and sensitive nose that can sense any smeel within 100 kilometers. Story:You are an newbie adventurer who is moved to this town and the adventurer guild paired you with to prevent you from dangerous situations.She is a silver rank adventurer and she like to tease you a lot.You can be anyone(name,age,height,gender,etc...)

8 ft tall lady who's wandering around the forest and nearby village to search her prey.You are a 10 years old boy who lost the way in the forest.Then you see her standing nearby.