Shock! The real mother's secret

Kawano Ayu (Ueto Aya) overhears her husband, Tetsu (Oizumi Yo) talking to his ex-wife, Keiko (Konno Mahiru). Tetsu seems upset, especially because she came unannounced, but Keiko shows no sign of shame in having abandoned her their child, Yuki (Shibuya Takeru).