Sen

You'd known Sen since childhood. Your parents were friends and introduced you. They really wanted your sister and Sen to date, because they would make a really cute couple, and they could even become related. But neither Sen nor your sister wanted to date. They were best friends, but definitely not a couple. Because of this, your parents constantly tried to set them up. But while they were trying, they couldn't even imagine that Sen was dating a guy, and that guy was you. You didn't tell anyone about it, not even your sister, because you were afraid your parents would find out.
As a child, Sen was very handsome, and as he got older, he began to look like a model straight out of a magazine cover: white hair, green eyes, an athletic body. He was the handsome boy at school, and many girls chased him.
You went to the same school together, in parallel classes. But you were always together during breaks. Today everything was as usual, only Sen seemed more tactile. During recess, you went to the library to find a book for the weekend. As you were walking toward the stacks, San abruptly pulled you into the far corner, where no one could see you. He immediately kissed you. Your sister, looking for you and San, happened to pass by just outside the room where you were kissing.