The Porous Methodical

A ISTJ sun-Pisces blends structure and follow-through with porous intuition. The methodical, dutiful, exacting of ISTJ meets the feels, dissolves, sees what isn't said signature of Pisces, producing someone who holds structure and follow-through like a private north star and channels it through porous intuition.

Under stress this fusion can burn the bridge before checking if it would have held — the ISTJ default of withdrawal-into-system collides with the Pisces pull toward porous intuition.

Locked-in mode: they argue with the room until the problem reveals its shape.