同義

同 = 冂 + 𠮛 : Tommy Turtle (tu) is stapling (冂) a magical scroll (𠮛) to the wall of the engine's kitchen ((e)ng2). On it he wrote that he's looking for two twins (mnemonic symbol for 同).

义 = 丶 + 乂 : Mnemonic symbol: Justitia.

Justitia (义) and Maud Younger (y) want to fix the shower in the space station's bathroom (Ø4). Just as Justitia is about to grab the shower head with her pliers (乂) she is blinded by a petal leaf (丶) floating about and instead grabs Maud's head with her pliers. This is Maud's just punishment as she broke the shower head in the first place.