The "Marshmaro" characters are visible to us, but not to the people in the BonKoi world. They come in various forms, with various personalities. The scripts call them "Maro (type)." In this episode, Sayuri, Ryou, Mitsuki, Gilbert, and Yoshinosuke have been taken over by the Marshmaros. Enjoy a BonKoi that's a bit different from the usual!
And if he could be a little wild and 
mischievous, that's be perfect, maro!
!وإن كان جامحًا ومثيرًا للمشاكل فسيكون ذلك مثاليًّا أيضًا-مارو
Und wäre er ein bisschen wild
und spitzbübig, wäre das perfekt, maro!
¡Y si pudiera ser un poco alocado y 
travieso, eso estaría perfecto, maro!
¡Y si pudiera ser un poco alocado y 
travieso, eso sería perfecto, maro!
C’est encore mieux s’il est
un peu sauvage et coquin, mallow.
E se for meio selvagem e travesso,  
melhor ainda!