Ichika sabotaged Miku, got caught, felt bad, and now is trying to make amends by helping Miku's confession.
Nino went after Ichika for being a snake and then went to console Miku. She then showed up and helped Miku confess, but became jealous and pushed Fuutarou instead.
Miku's original confession plan was ruined due to Ichika. After being consoled by Nino, she was forced into a date with Fuutarou until she confessed.
Yotsuba tried to help Miku but ended up exposing her to Fuutarou instead. She then showed up to help Miku.
Itsuki has been trying to get Fuutarou to realize she's Rena. She then showed up to help Miku.
It also turns out that Ichika was Lolikano, at least in part. She realized Fuutarou was the boy she played cards with back when he wore the blonde wig, but due to Itsuki's interference and her own dishonesty, Fuutarou didn't believe her.