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!