She couldn't say no to people, so that earned her the rumour that she was loose and would sleep with anyone.What was her secret? I recall this big deal made about her not being someone you should marry, or something like that, but I cannot remember why that was.
I agree - the MC realizes that, "Akio wants to get married to ANYBODY before Dad dies in a few months. But Dad will reject every suitor because he doesn't want her marrying someone she before she's certain she loves them. Simple solution: Dad needs to go overseas for treatment - he might live for years longer and then Akio could find out for sure that she loves MC before marriage."First half of even 2\3 of manga was good if you don't mind undecisive and shy MC. Situation and motivation was pretty realistic and dramatic. But later seems like author wanted to drag it out for another 5-10 chapters without any actual development, so plot just disappeared into forced drama and bunch of stupid cliché, while behavior of main cast progressively became more and more annoying.