Don't be overly afraid. The very first volume lines out nicely to what depth the author will go: it is much darker than the average volumes that come later. Chapter 1.15 has an assault - implies a rape attempt - that doesn't go very far before the perp is viscerally killed by the victim. If you get that far and it's too graphic for you, you should drop out.
The story in total lives on slice-of-life dialogues; on character interactions; and on worldbuilding. The tags are still justified as a warning that the author likes to experiment. On bright sunny days, things may still turn dark unexpectedly.
In total, I would assess that horror/violence is less than about 10% of the whole story, with actuall "gore" being only a tiny part of that. In addition, romance/love themes are another 5% of the whole story, with actual "sex" being again only a very tiny part of that. The author (and certainly the main character) has even been accused of being unromantic and ace.
Just for comparison, on that same scale where I rate "The Wandering Inn" as 85% nonviolent and nonromantic: I would rate "Worm" to be lower than 50% on that same scale and "ELLC" as maybe 15%, pretty much the opposite of the wholesome story that TWI presents.