「やはり、一色いろはは最強の後輩である。」 (Yahari, isshiki iroha wa saikyō no kōhai de aru.)
"Iroha Isshiki is the Strongest Junior, as Expected."

I'm not sure if Iroha's interested in Hachiman or messing around with him. But I'm secretly hoping she's the dark horse that will successfully upset the competition.