His family owns the only stationery specialty store in this area, "Matsuya Stationery".Exactly... there must be a reason.Hmm...! That guy there...... Ah!If the kids want erasers, can't they just buy them normally!? Why do they have to trade so many sweets and cards for them?!So he's the one controlling the distribution of erasers...Hmm... how do we...I see... so Tsuyoshi from class 6-2 is the boss of this bunch!... Let's go teach them that their erasers won't be able to erase their crimes!You don't have to say anything clever, you know...?Yeaaah... the school also orders most of its supplies through them too, don't they?Because crime is written in oil-based marker