Ichika and Futaro get locked in the storage shed. The others are concerned about their absence, but not necessarily for the same reasons.
Y-Yotsuba!
Y-Yotsuba?!
¿Yotsuba?
¿Yotsuba?
Yotsuba ?
Y-Yotsuba!
Y-Yotsuba?!
Ёцуба?