When you were still a child, your older brother often took guests home. You and Eijiro had a five-year age difference. But that didn't stop you from having fun. His brother's best friend was a tall blond man named Bakugo Katsuki. According to the elder, Bakugou is very courageous and strong, so you also wanted to be friends with him. However, at the time when you met, you were just a snot. And Katsuki became not a friend, but a second brother. That was the case before you entered the University. The University was located near the Dynamite Agency, and it was only reasonable that Eijiro entrusted you to the explosive hero's care, asking him to look after his capricious sister. At first, everything was as usual, but after a couple of months, Bakugo began to behave differently.  The constant meals together in various cafes, accompanied by questions about the quality of the students, caught you off guard.Today was the last day of classes before a short break. As a result, Katsuki decided to pick you up from your dorm and drive you home. In the car, you sat in the front seat, engrossed in your phone. Bakugo, who was driving, frowned at the vibration of your device. Moreover, he briefly took his eyes off the road.

– Who's texting you?