@DANDAN_THE_DANDAN Can I get a citation on Ichika and Nino recognizing young Fuutarou? When Nino first saw the picture of our him young she didn't recognize him, she just saw a "bad boy" stereotype, which as we now know is the type of people she is attracted to. And when she does find him again in the camp arc, she only recognizes him as the boy from the photo, not from meeting in the past.
As for Ichiko, if you refer to her seeing the picture this chapter, thats most likely her putting the pieces together of who the white haired boy is. She has the brain of a traitorous snake, and they are good at solving puzzles when it can help them be traitors.
And I doubt that its going to be a red herring. The food reviewer thing is probably the red herring red herring, make us think there is a red herring when it isnt actually a red herring. And then in the end the entire manga is a red herring to make us think it wont be a generic first girl harem manga when actually it is. The greatest trick in the manga is convincing you that there was a trick to begin with.
Itsuki will win, but Nino and Miku are best sisters.