The HXEROS headquarters generously grant Retto and the team a vacation at the beach, but when they arrive, they discover that the beach is covered with suspicious-looking sea cucumbers. Discouraged at the prospect of not being able to go swimming, the team head back to the hotel where they run into the Tokyo Branch, who have arrived to exterminate the sea cucumbers, and end up helping them in the extermination. Toma Taiga, the only male member of the Tokyo Branch, asks Retto to be his mentor. Toma says he admires Retto, but what secret is he hiding?
Coach, you told me that I'm the only one
who can collect H-energy!
Du wolltest das doch
Entrenador, ¡dijiste que soy el único
que puede acumular energía H!
C’est toi qui m’as dit que je devais
emmagasiner de l’énergie H.
Treinador, você me disse que sou o
único que pode coletar energia H!