Higehiro: After Being Rejected, I Shaved and Took in a High School Runaway, Vol. 4 (light novel) — Shimesaba

ONE WEEK TO SAY GOOD-BYE...When her brother, Issa, arrives on Yoshida's doorstep, Sayu is given only one week to prepare herself to return to Hokkaido. Now, as their time together runs out, she decides to tell Yoshida all the things she'skept hidden. About her school, her friend, her family. About how she wound up so far from home, and what her life with Yoshida has meant to her. But is this really the end?