Reimu Hakurei is the Hakurei shrine maiden. Most of this comic is written exclusively in hiragana, similar to literature for children too young to be able to read kanji. I will try to reflect that with simple words and syntax and conversely use more advanced words for standard written Japanese.

The Hakurei Shrine Maiden is defeating youkai. That is her job.

Just now, Rumia is eating up a human from the village, isn't she?

Reimu is on the case!