Plot summary from Baka-Updates
A boy named Houtarou who is not assertive about getting involved, but was ordered by his older sister to join the classic literature club. In the club, he gets close to the truth about an incident, involving a female member's uncle, which happened 33 years ago. The "energy-saving" boy is joined by an inquisitive girl in this adolescent mystery.
There are no raws currently available since its still kinda new, but i think after the volume release, some raws will start to emerge. I've been watching the anime and its pretty interesting so far, the description above does't do it much justice though. Well, should the raws ever emerge I think this would be a great project to pick up