Tonde Hi ni Iru Yuri no Inu

Masamune Endo is a high school student who develops feelings for Yuri Hanabuchi, a woman who works at a cafe. He visits the cafe regularly and attempts to get her contact information, but she consistently avoids giving it to him. During one visit, he intervenes when Yuri is confronted by her abusive ex-boyfriend. After this incident, the two agree to enter into a "restricted lover contract."