Shiitachi Yasai is a character from the anime series 'Yasai no Yousei: N.Y. Salad', which features anthropomorphic vegetable fairies living in a salad bowl in New York. Shiitachi is based on the shiitake mushroom and is depicted as quiet, gentle, and wise, often offering advice or insight to his friends. He plays a supportive role, helping other vegetable fairies face their daily adventures and challenges while fostering friendship and understanding among the group.