What kind of secrets do Fujiwara and his wife have in the anime "Natsume Friends Account"?

In the anime "Natsume Friends Account", I always thought Fujiwara and his wife were the closest people to Natsume. They not only helped Natsume in life, but also encouraged Natsume supporters in spirit. These two people never knew Natsume's ability, and Natsume really guarded them.

Natsume has been silently guarding them, and they have been guarding him. So far, Tanuma Kaname and Taki Tohru are the only students in Natsume who know Natsume's secret-Natsume can see what others can't. And this is also a kind of fate. Due to the absence of his parents, Natsume was adopted as a child. For some reasons, he was not treated well until the Fujiwara couple appeared. Uncle Zi () and Aunt Tazi have no children. They are all very gentle people, and they really like Natsume. Gradually, Natsume's closed heart began to open to the outside world.

Natsume has been afraid to tell Fujiwara and his wife that they can see monsters. He was afraid of scaring them. He is not afraid that Fujiwara and his wife will mind. He is just afraid that they will always worry about him when they know, and they are exhausted. Therefore, Natsume has kept this secret, and at the same time, he has been guarding the Fujiwara couple and the family from getting involved in this matter.

However, Natsume never thought that maybe Aunt Taz knew his secret a long time ago.

It was one night. Aunt taz heard the noise and went to the backyard. It turned out that the wind was blowing and a crow was accidentally crushed under the wood. So Aunt Taz quickly helped the crow get rid of what was pressing on her and let it fly away. So, the secret also bought the foreshadowing here. Crows who owe Aunt Tazi often come to the trees in the yard as if to repay their kindness. One day, (let's call it "little black", crow). Xiaohei has been barking in the tree. Taz menstruation felt strange and came out to see what was going on. When I came out, I found that the sky was gray and it was going to rain heavily, so Aunt Tazi just caught up with the rain and put the clothes in. She said, "The door of the house is closed. If it rains outside, I really don't know if it is raining heavily. "

Aunt Tazi may just think that the crow is repaying her kindness. Later, the crow will choose to remind her to collect clothes when it rains.