Yuuka's Nightmare and her decision

As the day fo Kaneki and Yuuka's visit to Kaneki's grandparents hotel to find the Second half of the stone tablet hint ended. Both Kaneki and Yuuka went to sleep until the next day.

The next day*

July 27, 2042

Yuuka: Haa~! It's morning! Time to get up Kane-

Yuuka woke up but she wasn't in their Hotel room instead she was in her house.

Yuuka: what the-? Why I'm here at my house? Wasn't I supposed to be in a hotel right now?

???: hey what's wrong?

Yuuka heard a voice behind her and she looked back to see.

Yuuka: Kaneki?!

Kaneki: hey.

Yuuka: what are you doing here?

Kaneki: well, you called me so I went here.

Yuuka: but aren't we supposed to be- wait what am I saying?

Kaneki: oh yeah, once we get into highschool I think we should start researching.

Yuuka: for what?

Kaneki: the Crown of Urizen.

Yuuka's thoughts*

(Whats going on why am I here? And what is- wait! I remember now! This is the day before we went to Mato high!)

Kaneki: you know, it might be harder for us to actually do research now that Sachi isn't here.

Yuuka: ...

Kaneki: anyways, see ya later. I'll be heading home now, see you tomorrow.

Kaneki began leaving but Yuuka tried to stop him.

Yuuka: WAIT!

But then the scenery changed and now.

Yuuka: what the?!

The scenery changed to the entrance ceremony in the school.

Yuuka: wait isn't this?!

She looked around and saw Kaneki in front of her.

Yuuka: Kaneki!

She ran towards him but then.

???: hey, umm what kind of girls are your type?

She heard a familiar voice and she looked behind her.

She saw herself talking to Ryueki.

Yuuka: No, Yuuka! Stop!

She tried going to her past self to stop her but.

Ryueki: if I gotta say my type of girls I probably like are Gyaru's

Past Yuuka: I see.

Yuuka was unable to stop it.

Yuuka: No... Yuuka you idiot.

She fell to her knees and began to cry.

Yuuka: you idiot, you just lost your best friend and your first love.

She began crying then the scenery changed again. And now she was at a hall way within Mato high.

Yuuka: W-What am I doing here no-

Kaneki: get out of the way.

Yuuka: Kaneki?!

(Wait I remember now, this happened a month ago the day realized that I lost my best friend)

Kaneki: hey didn't you hear me get out of the way.

Kaneki tried to get pass her.

Thwack!

Kaneki: dammit my books.

Yuuka: hey let me he-

Kaneki: shut up, don't bother me.

Yuuka: c'mon let me help!

Yuuka kept wanting to help him even though at this point she knows this isn't reality she still wanted to help him.

But.

Kaneki: I said leave me alone.

Yuuka: I won't! So please let me help!

Kaneki then stop and looked straight into her eye and asked.

Kaneki: why do you want to help me?

Yuuka: why? Because YOU'RE my best friend!

Kaneki: then why aren't you looking at me?

Yuuka: I'm sorry! I will make things right I promi-

She looked at him but he looked very different.

Yuuka: Ka... ne... ki?

Kaneki started ranting.

Kaneki: you never looked at me, never talk to me, you never even bothered to call me, you didn't even tried to interact with me at all!

Yuuka: look I'm sorry I'm trying to make things right!

Kaneki: make things right? You just want to hurt me more.

Yuuka: no! That's not the case! I truly want to fix our relationship I want to be best friends again-

Kaneki: shut up, you fake.

Yuuka: F-Fake?

Kaneki: the real Yuuka doesn't wear clothes that she clearly dislikes, the real Yuuka doesn't talk like an idiot , the real Yuuka is smart, the real Yuuka loves researching, the real Yuuka never forgets her dreams and most importantly the real Yuuka is my best friend. You may have her voice and her face but you are nothing more than a fake who just wants to hurt me.

Yuuka: I know! I'm sorry!

Kaneki: your sorry's are worthless. You're not my best friend your nothing more than a fake who doesn't even know yourself.

As Kaneki kept ranting his body began changing.

Yuuka: Kaneki!

Kaneki: this is all your fault.

He became darker and turned into a monsterous form.

Yuuka: Kaneki!

Crack!

Yuuka: what the?!

The ground underneath her began to collapse.

Yuuka: AHHHH!

and then Yuuka began falling.

Yuuka: No! Kaneki!

Kaneki appeared once again in front of her.

Kaneki: ...

Yuuka: Kaneki!

Kaneki: don't ever come near me again

Yuuka: !!!

Kaneki: you fake.

Yuuka: Nooo!

She then fell deeper and then.

Yuuka: NOOOO!

She woke up.

Yuuka: oh, it was a dream thank goodness.

She looked to her side.

Yuuka: huh? Where's Kaneki.

She looked around a little and saw Kaneki.

Yuuka: Oooh sorry for waking you up.

Kaneki was on the ceiling.

Kaneki: don't go screaming in the middle of the night you idiot.

Yuuka: yeah, sorry.

Kaneki got back into the bed.

Kaneki: this time don't go screaming.

Yuuka: Y-Yeah sorry.

Kaneki: well then, goodnight.

Yuuka: goodnight.

Kaneki then went back to sleep.

(That dream felt too real... And that form Kaneki took... I'll do everything I can to fix my relationship with him... And for starters I'll go back).

With that dream Yuuka was more determined to fix her relationship with Kaneki as fast as possible but what does she mean when she said "I'll go back"?