People become afflicted by "mysterious diseases" when their hearts and minds are affected by "the mysterious."
Koto, a girl who produces mayonnaise from her eyes, visits Dr. Ramune, who specializes in these diseases that can't be explained by modern medicine.
She was brought to the clinic by Ramune's apprentice Kuro.
Koto explains that she also cries condiments other than mayonnaise, and Ramune offers her a mysterious treatment.
You know, it's not good to 
tease adults like that.
.ليس من الجيّد أن تهزئي بالكبار هكذا
Hör mal, Kleines! Es gehört sich nicht,
Erwachsene zu veräppeln.
Mira, pequeña,
no deberías burlarte de los adultos.
Mira, pequeña,
no deberías burlarte de los adultos.
Dis, petite, ça ne se fait pas
de faire des farces aux adultes !
Sai, piccolina, non dovresti 
prendere in giro gli adulti.
Sabe, não é bom tirar sarro
dos adultos assim.
Знаешь, нехорошо так шутить
над взрослыми.