Unsure of both how to do this and what the text is, but…
From Fallen London Wiki (Staging)
The text about the taimen ruling the unterzee changes depending on what future you play this option from. For example, the text from the Manifold Future is:
Weaving toward a future filled with tentacles, the Youthful Naturalist will braid his very flesh into the tapestry. He will change. He will grow and diminish by different measures. Under heaven's gaze, he will live in Undying Shame – but he will live.
