The girls rub the sunscreen on Senpai's back.
They can swallow whatever they eat and turn it into an.
She's not very good at handling her friends when they're angry.
The few and scant defenses that he has for Nagatoro, he just doesn't have them for her friends.
It was a weird approach, but the girls are the friends he unconsciously sorely craved for.
As their collective happiness increases, more and more worlds become available to the Yoshis.