A cartridge includes: a casing including a developer accommodation part for accommodating developer; an agitator for agitating the developer and rotatable about a first rotational axis extending in an axial direction; a receiving member rotatable about a second rotational axis upon receipt of a drive force inputted thereto; a first drive-force transmission member rotatable about a third rotational axis upon receipt of the drive force from the receiving member; and a second drive-force transmission member rotatable about the first rotational axis together with the agitator. The second drive-force transmission member can contact the first drive-force transmission member and receive the drive force therefrom, the first rotational axis being positioned closer to the second rotational axis than the third rotational axis is to the second rotational axis when projected in the axial direction of the agitator.