[ Ryoji has a feeling that he shouldn't interfere with this, dream or not, but at the same time... If it's just a dream... ]

If it's just a dream, it can be changed. That's how lucid dreaming works— like what you're doing right now. Have your dreams ever had me in it? If not, it's already changed.

[ He could make it change, even if it's just this one dream, and it reverts back to the original the next time she dreams. ]