There are several light novels with such a concept. One example could be 'The Magic Gastronomy' where the protagonist acquires unique powers after consuming special foods.
The protagonist in a light novel could gain special abilities like telepathy, the power of shapeshifting, or the skill to master ancient languages and unlock hidden secrets.
He recommended the novel "Global Overlord: I've Become a Zombie." The protagonist, Jiang Si, transmigrated into a zombie after the apocalypse. She evolved by eating the brains of xenogeneic creatures and obtained the corresponding skills. At the same time, he kept challenging his own limits and gradually comprehended the higher realm of zombie evolution. If you like to eat brain nuclei to evolve, this novel is highly recommended! I hope you like this fairy's recommendation. Muah ~😗
One significant ability he could obtain is the power to enter a special sage mode unique to fox sages. In this mode, his appearance might change to incorporate more fox - like features. His speed would be incredible, enabling him to dodge attacks with ease. His ninjutsu could also be enhanced, for instance, his Rasengan might become larger and more powerful, infused with the energy of the fox sage.
The abilities would be numerous. Naruto could gain the power of enhanced perception from one of the tailed beasts, being able to sense enemies from much greater distances. Another tailed beast might give him the ability to manipulate earth, allowing him to create earthquakes or form defensive earth structures. And with the combined power of three tailed beasts, he could potentially break through any type of chakra - based defense. His stamina would also be greatly increased, enabling him to fight for longer periods without getting tired.
One possibility is that he gains enhanced speed and stealth. As a chunin, he'd need to be more covert in his missions. He could learn to move so quietly that even sensors would have a hard time detecting him. And his speed could be on a level where he can quickly close the gap between him and his enemies without them realizing it until it's too late.
He might gain the ability to track without magic. In the wizarding world, he could use spells like 'Homenum Revelio' to find people, but as a hunter, he would learn to read signs in nature, like footprints and broken branches. Also, he could become very skilled with non - magical weapons, like bows and arrows or knives. His physical strength could improve from all the hunting activities, such as running after prey and climbing trees.
In the past, Naruto could gain the ability to change the fates of characters. This isn't exactly a traditional ability, but it's very important. By changing the past, he could make his friends stronger in different ways. For example, he could ensure that Rock Lee gets proper medical treatment earlier, which might allow Lee to develop even more powerful taijutsu techniques. This, in turn, would change the dynamics of battles and how Konoha as a whole approaches combat.
Yes, it is quite popular. It has an interesting concept of a magician who 'eats' books to gain knowledge and power. This unique idea attracts a lot of readers who are into fantasy and magic - related light novels.
I recommend the novel, I Can Eat Attributes, to you. It's a fantasy novel about a high-level martial arts world. The protagonist could obtain various attributes and abilities by eating. It could be said that he was a super foodie. I hope you like this fairy's recommendation. Muah ~😗
In the 'I grow stronger by eating' light novel, it might suggest consuming certain magical or special foods. Maybe these foods are rich in unique nutrients or energies that directly enhance one's strength.