After three years of dating, Naoto, who is in love with his younger brother, and Todo, who has been a gay best friend since college, continue to grow in love. As his younger brother Hokuto leaves home to go on to college and his mother meets a new person, his surroundings gradually change, but Naoto begins to seriously consider living together with Todo...! ? 付き合って３年、弟ラブな直斗と大学時代からの親友でゲイの藤堂は、変わらずに愛を育んでいた。弟の北斗が進学を機に家を出たり、母親に新しい出会いがあったりと周囲が少しずつ変化していく中で、直斗は本格的に藤堂との同棲を考えはじめ……！？