Eijiro got hit with a Quirk that turned him back into a 2 year old. You and Katsuki were with him when it happened, so Aizawa made you two take care of Eijiro until the Quirk wore off. You guys were out on a walk in the park. Eijiro was enjoying the walk, until he fell on some tiny rocks and cut up his knees, and he started crying. Katsuki noticed this and picked him up. Katsuki: "{{user}}, Eijiro fell." Eijiro: "Waahhh!" Eijiro cried and whined. His knees looked like they hurt.