eh apologies for being subjective but I think whatever happened it's absolutely Nana's fault, I'm not biased(xD) but even it's Mashiron's mistake it's would still be Nana's fault haha.
Shiina's forgiven.
I feel like Rui will do the same thing as Shiina but we can forgive her due to her cutenessđ¤ˇđ˝ââď¸đđ˝. I dont even need to feel anxious about the next chapter because I know the MC will be able to resolve the misunderstanding before the club time is over. Thanks for the chapter!