The Guardian Light Bulb

In someone's heart, Amu belongs with Ikuto! But in the anime she remembers, Amu ends up with Tadase, damn it!!! So she gets annoyed! She transmigrates into Shugo Chara! with a Guardian Character who is a "real" homewrecker, and becomes a relationship-wrecking third wheel, specializing in sabotaging romantic tension and nipping it in the bud. But, but! Having to pretend to be a boy and become sworn brothers with her target because of her Guardian Character's gender is one thing, and faking a bromance is one thing, but going to absolutely any lengths is another! Why does one extinguished spark just get replaced by another? Is this what that saying, "Kill one of me, and thousands more will take my place," is really about!? And so, having never seen the anime's actual ending, she sets out on a future path with the goal of becoming the ultimate third wheel. She roars inside: Go, homewrecker! Claim your place! Damn it, she claimed the wrong place! And who is this guy, anyway? Reading Guide: 1. The male lead is an original character, and I haven't thought of a name for him yet. He isn't Ikuto Tsukiyomi. I personally prefer loyal puppy types! To please my sister, this story will be 1v1!!! T^T 2. The heroine really hasn't seen the anime's ending, which is why she comes up with such bizarre ideas. 3. This story may be naive, overly idealized, and even preachy, so please don't take offense. If that's not your thing, read with caution! Please don't throw bricks at me. Be gentle, thank you for cooperating. P.S. After thinking it over carefully, I feel that "third wheel" is a more accurate description of the heroine's role. So I've rewritten the blurb and changed the title. I changed the title, and somehow I feel much more at ease.