
Arguing that MC took advantage of ML isn’t really accurate because at first, MC didn’t even realize ML would lose his memories of the current. Not to mention he did try to keep ML at a distance, but ML kept violating his set boundaries and being pushy. ML didn’t mean it in a bad way, but that doesn’t change that there was some pressure on MC and come on, he caught feelings because a 6’0, hunky, good-looking man kept pursuing him, like I would never see that coming (sarcasm).
You also can’t evaluate this exactly like in real life because this is an esper/guide world, where physical intimacy is commonplace for guiding. MC’s and ML’s doctor was literally encouraging and pressuring MC to heal ML and have sex with him, like come on.
I’m going to tell myself that the ending is that all the MLs are the same soul so after MC lives out his life in each world, ML’s soul becomes whole again and then they live happily ever after in reality