Ever since a became a KAT-TUN fan, there's 1 member's fans I've found to be particularly annoying, and they are
Jin fans.
Not all, but SOME of them can be really irritating, some of their behaviors & antics are just unacceptable & rude. For example, a lot of the hardcore Jin fans actually dislike Kame very much, and often they would do extreme things to hurt Kame...if I remember correctly, once in 2007 when KAT-TUN were at a function of some sort (can't recall what specifically)...when Kame spoke, a group of hardcore Jin fans yelled at him & basically told him to "shut up!", which was so rude & disrespectful, and totally uncalled for!

understandably, Kame was really upset & hurt.
Another incident happened during 1 of KT's concerts...when Kame went on the stage to perform a solo, some haters hurled abuse at him, telling him to get off the stage etc...I found out later on that some of those haters were hardcore Jin fans.
What's even more ridiculous is that some of these hardcore Jin fans "hate" Kame so much that they even attempted at "re-creating" KT's history, by fabricating all these stupid lies about Kame & KT as whole, making up stupid nonsense like Kame "has never gotten along with the other members", or "Kame is distancing himself from the others" or "the other members actually never liked him in real-life" etc & other ridiculous bullsh*t like that

basically fabricating stupid nonsense by singling out Kame, and trying to push him out of the group. Which, they can just dream on, because Kame is a crucial part of KT & without him, KT will NOT be the same, and those anti-Kame hardcore Jin fans will just have to bravely accept that fact.
Many of the other outrageous anti-Kame antics were also carried out by extreme Jin fans, who dislike Kame very much. Their antics are just so immature & despicable

Of course, NOT all Jin fans are like that...there's still many other Jin fans out there who are more mature, reasonable & friendly. But the extreme of Jin fans, those who "hate" Kame, can be very nasty indeed...and being such a big fan of Kame myself, their immature actions really frustrates me sometimes

And what's even more upsetting is that these Jin fans are also from the same fandom as me, we're all KT fans, so we should all be joining forces & show our support & love for the group & its 6 wonderful members who define KT! Usually it is like that...but this whole "anti-Kame" business with Jin extremists within the fandom is really distressing.
Although there are also some Kame fans out there who don't like Jin either...but I seldom hear about Kame fans hurling abuse or resort to personal attacks on Jin...or trying to "re-create" KT's history by singling out Jin...so why are those Jin extremists acting so irrationally towards Kame? He hasn't done anything wrong to deserve this kind of treatment!
Another thing I don't like about some Jin fans is that they tend to think so highly of Jin...of course, it's normal for any fan to praise their idol...but the problem with some of these hardcore Jin fans is that they over-rate Jin so much so that, to them, they believe that he is the "best", that without him, the group would just not work...or that he is the "only worthwhile" member in KT...and that, to me, is really going too far!
Yes, I admit that Jin is a crucial part of the group, without him, KT would not work...but it's the SAME case with the other members too! Without either of the other members, the group would just NOT be the same! KT is NOT just about Jin! It's about
ALL the 6 members;
Koki, Kame, Maru, Ueda, Junno AND
Jin! They are all different, but
EACH are a crucial part of the group, it's
ALL 6 of these guys & their individualities which defines '
KAT-TUN'! Jin needs the group, and the group needs him, KT needs
ALL 6 of its members in order to thrive, and those Jin fans need to accept that fact!
I have also noticed that often some Jin fans don't really appreciate the other 5 members much & all the hard work these guys have put into pleasing & entertaining us fans. To them, it's all about Jin, Jin, JIN...their main focus is always on him...without him, these fans wouldn't even give the others a 2nd glance, which is really bias of them I think.
For instance, lately Jin has been absent from recordings of the group's TV show 'Cartoon KAT-TUN' due to illness, and was not present in the last 2 eps aired, and it seems like he's absent for next week's ep too...but because of Jin's absence in recent eps, many of his fans in Japan complained that it's "boring" without him & didn't bother to tune it, thus the ratings dropped to very low for the show. This really irritated me when I found out

I have streamed the recent eps & I did not find them "boring" at all, in fact, I really enjoyed those eps, the guys were very funny & acting like always, the eps were very entertaining, and the vast majority of other KT fans who've watched those eps all agree with me & they all enjoyed them too.
I suspect those Jin fans didn't want to watch those eps just purely because Jin wasn't there...which I think is very bias to the other 5 guys, because the drop of ratings effects them. Even with Jin's absence, the show must go on, and all the other 5 guys had worked so hard to keep the show entertaining & pleasing for their fans. But those Jin fans just couldn't be bothered to give them a chance

Frankly speaking...I personally don't really pay much attention to Jin on CTKT, since he doesn't really do much at all on the show...except when he's on 1 of those on-location shootings...so to be perfectly honest, Jin's absence from recent eps did not effect me at all.
HOWEVER, if 1 of my fav KT members were to be absent from a ep, I would still watch it, for the other guys' sake...since I acknowledge all the effort these guys put into for every shooting of each ep & I appreciate all their hard work. So I would still tune in to watch, even with my fav members missing.
Of course, I'm not expecting those Jin fans to like all the other 5 members or to watch every single ep of CTKT...all I want is for them to just
at least appreciate the other members more & acknowledge all the efforts they've ALL put into their work & their great dedication to their fans.
I don't dislike Jin, and I certainly do NOT "blame" him for his fans' actions...after all, these celebs cannot control & are not responsible for their fans' actions. And I know that Jin himself is often upset & disappointed with his own fans' actions...back in '07 during that incident, after his fans hurled abuse at Kame, Jin told those fans to "shut up!" too, obviously very upset & annoyed with his own fans' behavior. I guess that could spark a debate about whether or not what Jin said to his fans then was appropriate...but I can understand how he must have felt at the time. I mean, if I was in his position, and seeing my bandmate being treated so disrespectfully by my own fans, I would be really frustrated, annoyed & disappointed with them too.
Lastly...I am aware that a few fans of some of the other KT members also behave rather similarly to those irrational Jin fans...but they, in comparison, are not nearly as extreme as those hardcore Jin fans I've came across...and not nearly as many either.
Remember, I'm simply referring to those irrational Jin fans, and NOT "all" Jin fans in general...so I hope there won't be any misunderstandings...I do apologize if I had offended any Jin fans out there though.