I Heard That the System Has Been Very Arrogant Recently.

My name is Sannomiya, and I am an ordinary high school student. Although I am a time traveler these days, it is not easy to be confused as a time traveler, but I have always faced all kinds of storms in life calmly—— Calmly time travel to a seventeen-year-old girl... Boy, Calmly facing an old girl with whom I have a hard time dealing with, Calmly manage a big brother with a split personality, Calmly take care of a mother with a mental age of ⑨, Calmly going to the school I have been attending all my life, Calmly living a life with few friends, He calmly listened to the voice that suddenly sounded in his mind—— "Hello, No. 2B**, my name is System Lord. This is our first meeting. Please take care of me." Sannomiya said that he couldn't be calm anymore~~~~~~ This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.