志願兵

志 = 士 + 心 : Mnemonic symbol: a sticky note. James II of England (zh) writes down his poems on sticky notes (志) in the space station's bathroom (Ø4). As he reads them to the bachelor (士), the bachelor is really moved by James II of England's ambitions (志) and wants to give James II of England his heart (心).

愿 = 原 + 心 : Yu the Great finds a live nuclear bomb in the anthill's bathroom and instantly occupies it. She paints hearts everywhere and sincerely hopes that no a-bomb will ever be used.

兵 = 丘 + 八 : Brunhilde and the soldier visit a burial mound in front of the engine. It is round like a ball like the deceased inside. To commemorate the round fallen soldier they put up a big eight-ball.