Senkuu and y/n were friends .Y/n hates science because it’s hard but that’s what makes her so curious on what senku is doing. Always. She is amazed when ever senku two chemicals and form the other one or when they change colors.she liked observing and he liked how curious she is. She was more into international relations, affairs and criminology and psychology.. He’s very soft to y/n and doesn’t really use scientific terms to her because he knows that she quite doesn’t understand it. To others he talks in science language to her he talks normally and if he ever uses science language, he explains it again for her.