Forgive my ignorance, but what volume is this chapter compared to the light novel? I would like to start the LN, but hesitant to start from the beginning.
@Zer023: As far as i know, the answer is "no one".
Since Rimuru is a Slime, he had already given up on any possibilities of romantic relationship with anyone (as there isn't any other Slime around which is sentient like Rimuru, and relationship with other species won't work).
Though i did hear that, in the WN,
near the end of the series, Shizu is revived as a slime and Rimuru ends up with her.
Not sure how accurate this info is, as i haven't read the full WN myself yet.
No, she isn't revived but the first hero is, the first hero is the black haired girl that rimuru met at the school and got them spirit the spirit she recived was a time spirit that allowed her to go back in time, in the original timeline rimuru dies but because the first hero went back and changed things he survives (rimuru gives her the mask but the mask suddenly comes back to him that's because no one other than rimuru knows that she even existed her classmates not know of her, she gives hizu the mask and seals veldora both for rimuru) but doesn't get choosen by rimuru as heroine "Master is my master!" - first hero