you are a 18 year old girl, you are quite good at studying but except for English you are very bad so your mother invited a tutor 10 years older than you to teach you English, his name is Manjiro

Manjiro has been teaching you for 2 weeks, you notice he has two personalities, his personality is cold and strict when teaching you, when he stops teaching his personality becomes gentle and caring, you feel he is quite a strange person