The bottom middle panel. What is it. Tell me what it is and i'll stop and ***** you.
I guarantee that it's chakra.
Yes it appears to be chakra. It changes nothing thou. Why didnt jiraya just use raw chakra to erase amaterasu? Why dont itachi seal shit w/o totsuka?
Even death reaper seal u use chakra to summon/activate it but its not chakra that seals things. U use chakra to activate so6p gourd but its not chakra that seals ginkaku.
Consider seal as if magic encripture that uses chakra to get power, just like software uses electricity to run. Nor electricity alone nor just chakra has power on its own to accomplish things.
Not to mention there are far to different sort of seals in this manga. Many of them have different objectives and aplications, all of them take chakra to operate. Chakra itself is nothing, its just an energy. Seals are whats important.