Naruto Kyubi no Youko's chakra is infinite, please show the evidence.

Kyubi no Youko's chakra is not infinite, but it can absorb natural energy at any time to make up for it.

Kurama kyuubi, an orange fox with nine tails, is the bijuu formed by one of the nine chakra separated from ten tail's body by Ootutuki Hagoromo's big wooden feather coat. It ranks first and has the strongest strength among the nine bijuu, and has been sealed in Uzumaki Mito, Uzumaki Kushina and Naruto's body.

In the Kyubi no Youko Rebellion, Kyubi no Youko, a four-generation Feng Shui goalkeeper of Huoyingbo, split in two, sealed Kyubi no Youko's negative chakra together with himself into a god of death, and sealed Naruto's positive chakra with a gossip seal.

chakra in the body is a special chakra without attributes. It may be because its ability is close to that of ten tail, so its column force is quite different from other column forces when it is completely bijuu. Naruto can keep his human figure when he is bijuu, and also make chakra look like Kyubi no Youko.