Jiraiya thought it over and came up with one possibility.
Maybe this kid doesn't know how important Mount Myōboku is in the Shinobi World.
So he asked,
"Ahem, Little Obito, have you heard of Mount Myōboku?"
Obito nodded.
"Of course! It's one of the three great sacred places, alongside Ryūchi Cave and Shikkotsu Forest."
"Uh..."
Jiraiya was baffled.
If the kid had heard of Mount Myōboku, why was he hesitating?
Mint-what?
Obito scratched his head and looked at Jiraiya.
"Sorry, Lord Jiraiya. This is a big decision. I need to think it over."
Jiraiya waved a hand.
"That's fine. No rush. Take your time."
"Thank you, Lord Jiraiya!"
Obito thought and thought.
Even after wrestling with it, he still couldn't decide.
Forget it.
When in doubt, quantum mechanics...
Wait, no. I'll just ask the system.
"System bro, could you give me some choices to help me decide?"
The system: "ʘʚʘ Huh? Sure..."
Ding!
[Option one: Give up Ryūchi Cave Senjutsu and sign a Summoning Contract with Mount Myōboku. Completion reward: Mount Myōboku Senjutsu.] [Option two: Decline Mount Myōboku's invitation. The Three Divine Maidens of Ryūchi Cave... Ryūchi Cave Senjutsu is the best! Completion reward: Ryūchi Cave Senjutsu.] [Option three: Take everything you can get. I want it all! Play both sides and train in both forms of Senjutsu! Completion reward: Cold-Blooded Animal.] [Cold-Blooded Animal: Your body will undergo an irreversible transformation. But don't be sad! You may get uglier, but you'll get stronger too! ...Really, though, you'll be hideous!]
Train in both forms of Senjutsu?
Obito's eyes lit up.
But that reward...
Obito asked tentatively,
"System bro, can I pick option three and skip the reward?"
The system vibrated inside Obito's head.
"No! And I don't recommend that you train in both forms of Senjutsu at once, Host."