Soma is the drink of the Gods found in Zoroastrian, Hindu, and Vedic mythology. It was the name used for both the drink, the plant, and the deity who personified the drink. The God Soma was one of the most important Gods in the Rigveda.
While not seen directly, Sooma is referenced through the skill Soma Gongen, which unleashes his power to recover all HP, MP and ailments to one allied target. This is the only spell exclusive to Naomi that Nemissa cannot learn later on in the game. However, this effect can occur via items instead.