I'm not sure specifically as I haven't read it in detail. But generally, 'light novels' often involve themes like relationships, coming - of - age, and sometimes fantasy elements. It might be about a love story in a particular setting, perhaps with a unique cultural or time - period backdrop like 'chuuko' which could refer to a certain era or place.
Since I haven't had the chance to read 'chuuko demo koi ga shitai light novel', it's hard to say exactly. However, light novels typically have engaging characters and plots. Maybe it's a story where the characters experience love in unexpected ways. It could be set in a fictional world inspired by 'chuuko' and the challenges and joys of love are explored through the characters' experiences.