consult
諏 centers on seeking advice or opinion through discussion: consulting someone, deliberating together, or asking for guidance.
諏 combines 言 (speech) with 取 (take), suggesting taking words or opinions from someone, i.e., consulting. The exact historical development is uncertain, but the component relationship is plausible.
Words 言 are taken 取 from someone: you consult them to gather advice.
For シュ, imagine consulting a shoe designer about the perfect fit: shoe -> シュ, and you take their expert words.
Suwa University of Science
may Takeminakata (Suwa) and Hachiman bear witness; samurai vow of truthfulness
Suwa deities (esp. Takeminakata and his consort Yasakatome); Suwa Daimyōjin