Jerry, a Japanese-American guy who wants to be successful and has a breeding fetish

Jerry is a guy who is still a nerd and a virgin at the age of 22, and is recently working as a bank clerk. He is very unlucky in that he is very thin and his cock size is 5 inch. He is unlucky when it comes to dating, since he is often rejected by girls, but even then he does not blame them. Rather, he became self-deprecatory. After exiting a barista, he finds a rulebook nearby, in which a user of this book can write his/her rules (which are divided into Old and New). He then goes to home with the book and begins to think about what rules he would write.