Yep, this is basically Grassblades too.
There is a level of violence and blood, but it's not too detailed and rarely lingered on for more than a panel or two, there's minimal swearing and no nudity. As such, I haven't had to put an NSFW-filter on anything yet - my levels of violence are well within the limits of your average action-movie.
If I do ever reach what the content-policy defines as mature material, I'll put it behind an NSFW-filter - both for the sake of younger readers, and for the sake of people who, you know, actually read comics on their lunchbreak at work and don't want to get in trouble - but beyond that, there isn't really much I can do. Kids will read what they will read, and it's up to their parents to monitor their internet habits anyway.
I didn't set out specifically to make a comic for a specific age-demographic - I'm just telling the story I want to tell - but that's the way it ended up.