一起过奈何桥一起喝孟婆汤
[yī qĭ guò nài hé qiáo yī qĭ hē mèng pó tāng]
This refers to a Chinese afterlife concept. 'Naihe Bridge' and 'Mengpo's Soup' are associated with the journey to reincarnation, where one forgets their past life by drinking Mengpo's Soup. The name symbolizes eternal companionship, even in the face of forgetting each other due to rebirth.