When Himuro finds out that her junior in the Ikeda lab, Kosuke, has spent over 220 thousand yen on his beloved Aika and holds her every night when he goes to sleep, she is shaken by the realization that the only present she's ever given Yukimura is a notebook, and that she's never held him while she slept. She worries that she can't objectively call what she feels "love." As Yukimura and Himuro endlessly debate "love" using numbers, Kanade proposes that the two of them go on a date, but...
When pillbugs turn right at a corner, 
they turn left at the next corner,
عندما تتّجه الأرماديلا نحو اليمين عند زاوية ما 
.فهي تتّجه إلى اليسار عند الزاوية المقبلة
Wenn Asseln an einer Ecke rechts abgebogen sind,
gehen sie das nächste Mal links.
Cuando giran a la derecha
en una esquina,
Cuando giran a la derecha
en una esquina,
Ils alternent toujours
un coup à gauche ou un coup à droite
Quando i porcellini di terra svoltano a destra a un angolo,
a quello dopo girano a sinistra
Se eles viram pra direita numa curva,
o próximo movimento é pra esquerda,
Свернув направо на развилке, 
поворачивает налево в следующий раз