Good reading and good plot
And don't read and accept "she not chubby" BECAUSE
For information you are in Japan. Therefore they do not have the same notion of chubby as in other western countries.
Also think that the culture and their food is different from yours. because for them when you exceed the standard of the slim waist you are chubby after you are well in Obesity
Also in Japan there are very few overweight people.
Before leaving a comment like this, that she's not chubby. Go check the obesity statistics around the world.
Pocchari Kanojo to Sweet Kareshi Anata to Toroama Sxercise