![I was just reading a fandom explanation of Naruto Shippuden episode 133(from the Sage Mode Training arc). But I still can't understand what "secret of Pain" is referred here. Does anyone know? : I was just reading a fandom explanation of Naruto Shippuden episode 133(from the Sage Mode Training arc). But I still can't understand what "secret of Pain" is referred here. Does anyone know? :](https://external-preview.redd.it/-yLfAsFuPQiZ6P8B8NdoDsTE0B2I6XD82RCk-8sddwM.jpg?width=640&crop=smart&auto=webp&s=9c876b3661fb27e4cb192378ca38ce362e1b7aa3)
I was just reading a fandom explanation of Naruto Shippuden episode 133(from the Sage Mode Training arc). But I still can't understand what "secret of Pain" is referred here. Does anyone know? :
![Himawari Training Sage Mode with Naruto and Fukasaku | Himawari Uses Sage Mode to Control Byakugan - YouTube Himawari Training Sage Mode with Naruto and Fukasaku | Himawari Uses Sage Mode to Control Byakugan - YouTube](https://i.ytimg.com/vi/7eWTGv0ay-Q/mqdefault.jpg)
Himawari Training Sage Mode with Naruto and Fukasaku | Himawari Uses Sage Mode to Control Byakugan - YouTube
![Naruto Awakens New Sage Mode After Kuramas Death. Sasuke's Shocked - Boruto: Naruto Next Generations - Bilibili Naruto Awakens New Sage Mode After Kuramas Death. Sasuke's Shocked - Boruto: Naruto Next Generations - Bilibili](https://pic.bstarstatic.com/ugc/4550cf451031419a594730bf867dc823fcf57d15.jpg@1200w_630h_1e_1c_1f.webp)