I was ready for Yuu to straight up dump Emi like the sack of potato she was. Smh.
angry ranting about Emi redacted
Since the ending is vague as hell for me and therefore entirely up for my own biased personal interpretation. My own take is -
If we take what the terrible friend say about the toy cat at face value: "I have to do it or it doesn't count." If Yuu gives her the cat charm, this relationship is bupkiss. Since I find this "friend" 'utterly unlikable, she got dumped. Yuu is moving on and leaving this moron behind. Shallow take #1.*Yes, I'm entirely avoiding the hand holding panel.*
I'm not sure if either person has the usual romantic feelings towards the other party. (Oh noz, realism in my manga /s) Adult Yuu mentioned in chapter 2 that she gets a bit of superiority complex because of Emi's obsession towards her. And then if you look at the earlier timeline during middle school in chapter 2, when Yuu gets turned down by the guy she went crying to Eimi. What happens here? "*The moment she cried to me, her best friend, I became the protagonist."* I... wha?
Emi likes to feel important/"be of use" to Yuu, but if Yuu leaves her for a romantic partner, Emi is out of the picture. Since Emi is unable to comprehend love, she decides to imitate Yuu's behavior. Usually, imitating someone is a good way to learn things. But since we're talking about love and all sorts of emotional stuff that goes into this, it's not something this dense ass b can comprehend. She steals Yuu's love interests as a way to make sure no filthy men take away the only worthy person she has. While she may start out trying to understand love, but a lot of selfish things got mixed into it and she became a doucehbag.
"I hate things like love."
Because she can't understand it. Doesn't understand it. Won't accept it. It takes Yuu away from her. If she keeps taking the things that Yuu loves repeatedly then maybe she'll finally understand it. I get that concept of love may be different for everybody, but there are ways to go about this without becoming an utter prick.
Here's another reading of the last couple of pages:
Here's your dumb cat -> I'm running the show now -> Takes the lead -> Hand holding scene -> This is just a small payback for all the emotional garbage you made me go through -> Super fitting credit page
Dialing back to an earlier thought, is this love between the two or just weird (none?) friendship thing? I don't mean close girl pals either, I mean really hazy, foggy, indeterminate thing. Since the power dynamics is off. It feels like general insecurity coming from Emi because she feels she got left behind or not being the special number one person anymore. She also doesn't exhibit any of the usual behaviors of someone being in love. No, kicking a guy out of the chair doesn't mean anything. That can just be a possessive thing going on. Being kissed by Yuu only made her feel gross and suffocating. So...?