Fuutarou, who ate too much Miku's homemade dishes had stomachaches. Itsuki and Nino just came. Fuutarou, who wants both of them to study tells Yotsuba to hold them off somehow. As a result of this, the troubled Yotsuba lied to them saying Fuutarou has a serious illness.

Fuutarou and the quintuplets were able to join the field trip safely. Fuutarou, who was made in charge of the test of courage, will play the ghost role with Yotsuba. Meanwhile, Nino who had paired with Itsuki and participated in the test of courage lost sight of Itsuki. What appeared in front of Nino who was left alone and anxious was...