Living-Room Matsunaga-san 11

Meeko, a high schooler living in a boarding house, is finally in a full relationship with Matsunaga, an older designer. But then Matsunaga leaves the house after taking on a big job...and Ken and Asako, now a couple themselves, follow soon behind. As the atmosphere around the house changes, Matsunaga seems ever-more-distant to Meeko—he even cancels a birthday date with her last-minute. But now Ryo is sidling up to her... It's the climactic conclusion to a tale of romance across generations—all under the same roof!

Volume 11 of the Living-Room Matsunaga-san manga series by Keiko Iwashita.