There's absolutely no reason for this dude to have any doubts that shion likes him, she makes it painfully obvious that shes into him whenever they're together
I was legitimately cringing during that 3v1 confession (no seriously, what the fuck was up with that??) while saying: "bro why tf would you think she would accept any of those 3 guys??? DO YOU NOT SEE HOW SHE ACTS WHEN SHES WITH YOU???"
It's like he completely forgot about the conversation they had in the park where Shion talked about the reason behind becoming an idol, ain't no way a girl is gonna do all of that just to reunite with someone she only considers as a childhood friend and nothing else 🤦🏾♂️🤦🏾♂️