Every female character is a mess
FMC can't be honest even if it kills her (MC too, but he's changing little by little) and throws a fit every two seconds
Little sister is one of the most annoying character ever, I understand wanting to protect her sister and living hyper but not at the cost of tiring everyone around you
And now the FMC best friend throwing them under the bus for jealousy
Poor MC can't catch a break