Fujii defines metamorphology as more than geometric transformation: it is the alteration of the conformity that establishes the theories and codes through which architectural meaning normally travels. A column, cornice, wall or grid acquires another role when its relation to the surrounding system changes. Meaning therefore lies neither in the element alone nor in arbitrary formal invention, but in the code organising relations among elements. Hajime Yatsuka’s accompanying reading makes the procedural implication explicit: Fujii’s architecture behaves like a transformation machine governed by rules for syntactic manipulation; once vocabulary and procedures are specified, outcomes can exceed the architect’s direct speculation. The operative contribution is syntactic mutation. Architecture becomes a controlled machine for changing the conditions under which elements signify. The wider bridge is to formal grammars, semiotics and algorithmic design. Fujii is particularly important because transformation remains meaningful only through the persistence of an intelligible system: mutation alters the code, but does not abolish the possibility of reading.