If you want to go in further, you'll need to take a harder test... Makes perfect sense, right? So what do you want to do? Do you want another test?

Then go to [map 270010400] and defeat the Chief Memory Guardian. If you defeat 300 of them, I will grant you permission to go beyond that.

Oh well. Too bad if you think it's too hard for you. I guess that's your limit.

You've defeated 300 Chief Memory Guardian. That's amazing. I will grant you permission as promised.

#dAs the representative of Rhinne, the Goddess of Time, I grant you permission to look back at your 5th memory.

Go on. You should be able to go up till [map 270010500]. As you may have guessed, you can't go beyond that. If you want to go further... you'll have to take a new test.

You haven't defeated 999 Chief Memory Guardian yet. I don't think you are strong enough to walk against the flow of the past yet.