Naruto explained the root of the matter to Uchiha Hikari in full detail, starting with his Dragon Vein mission, how he had become separated from Hanabi Hyuga, and even the severity of matters involving the Ōtsutsuki God and Mōryō.
Coming from the future sounded utterly fantastical, the sort of thing anyone would instinctively refuse to believe upon hearing it. But Uchiha Hikari believed him. She believed everything Naruto said.
Naruto was extremely anxious. After entering Sage Fox Mode and sensing no hostile intent nearby, he slowly told Uchiha Hikari everything.
"Hikari, I know what I'm saying is too far-fetched and hard to believe. Yesterday, Kurama and I discussed whether we should tell you. But I still felt that I couldn't deceive you. I had to be honest and tell you everything."
Uchiha Hikari looked lost. She tilted her head slightly as tears swirled in her eyes. "So, Naruto, you're going back to your own world. You're leaving me, aren't you...?"
"Yes. Hanabi and I fell into different times and spaces. With your help, I can leave this time and space and find Hanabi in the lost time and space." Naruto answered directly.
Uchiha Hikari asked softly, "Then did you save me because of my ability?"
"No..."
Naruto's immediate reply made Uchiha Hikari raise her head, sweeping away the gloom that had just risen in her heart.
Naruto looked seriously at Uchiha Hikari. He was bathed in golden light, much like her Susanoo. It felt so warm.
"When we first met in the prison cell, I had no idea what your ability was. Kurama and I had both considered going to the moon to find the Otsutsuki Clan. During yesterday's battle between the Uchiha Clan and the Senju Clan, I happened to see you display the ocular technique of your Mangekyō