Hunter x Hunter may not be as popular as other shonen series, but it has a healthy fanbase, which is understandable since Nen is one of the best power systems in anime. It also helps that there is plenty of action and fun characters. At first glance, Hunter x Hunter seems like a kid-friendly series, but it is actually quite violent, and it can get fairly dark. Like many shonen, HxH has caught fans off guard with some very shocking moments.
Source：https://www.cbr.com/shocking-hxh-moments/
