Kakkoyoku No Yome Vol. 3 — Manga Raw / Buy Official

In this volume, Nagi faces a catastrophic situation when Hiro unexpectedly visits the apartment he shares with Erika. Forced into a high-stakes charade, Nagi desperately hides the nature of their relationship, but Erika’s unpredictable antics only serve to raise Hiro’s suspicions. The emotional pressure peaks when Erika’s father demands she choose between continuing her current life or annulling their engagement entirely. This ultimatum forces Erika to confront her growing possessiveness toward Nagi, a feeling she can no longer suppress. Meanwhile, Nagi finds himself questioning his own devotion to Hiro as he realizes that Erika is no longer just a 'fiancée' to him, but a vital part of his daily existence. The delicate balance between these four high schoolers shatters as hidden agendas and suppressed desires come to the surface. It is no longer just a game of pretend; it is a chaotic collision of genuine hearts struggling to find their place in a world tilted off its axis by a childhood mistake.