Uzumaki Gamu hadn't actually thought that much about it. He'd only said those things to give the two of them something to do (Uzumaki Gamu: They're only Ōtsutsuki, after all. I'm confident I can handle them myself! As long as I keep developing like this...), so they wouldn't overthink things and go astray while he was away... Especially Madara. The Uchiha's innate sentimentality made it easy for his thoughts to take a wrong turn. With a goal... at least he wouldn't head in the wrong direction!
Everything else had been the two men's own interpretation!
As they talked themselves into it, both of them started getting fired up-with a new goal, everyone could work toward it together. Nothing could be more exciting!
Still, Madara said worriedly, "...Even if we're all working toward the same goal, you'll be the only one constantly moving forward, fighting powerful enemies..."-It was a lonely road, and it couldn't possibly be easy!
"It's fine... Even when you're no longer here, your hearts will always be with me. Besides... I have companions now. I won't be alone!" Uzumaki Gamu said with a smile. In the past, that might have been hard to say, but now he had two female companions... Surely he wouldn't be lonely?
"...Even if we're apart, our hearts will still be together?" Hearing that, Madara couldn't help laughing. "Hahaha, what a romantic way to put it!"
"Well, that's rare. You being so honest!" Uzumaki Gamu quipped.
"Well... it really is a wonderful way to put it!" Hashirama nodded in agreement. "Anyway, leave things here to us. Keep moving forward without worry... No matter when, we'll always have your back!"-And with that, the three of them had a new goal. Everyone could keep moving forward!
The next day, Uzumaki Gamu first went home to say