(there or some spoilers in here so read at your own risk)
1: No Character development
2: Not utilizing the elements that your story have
3: bad use of romance
4: Horrible ending
1 character development (mainly I'm going to speak about main character in this one since if i talk about all support and mc in this show it would be to long)
in shounen manga one of the biggest thing along with having action pack awesome scenes that draws the reader is watching the character develop step by step. Not all shounen manga have M.c character developing (ex: one piece luffy DBZ goku ) let me just say a quick show of what i mean by using luffy and why he didn't need character development. from the begin of one piece luffy was never a coward or a weak type of character he was always confident and strong willed and does what he wants to do and feel like doing similar to goku if i say so my self they or more in the category of Over power stupid/genius characters from the start. what i mean by that is from the begin of one piece we witness luffy doing goofy and stupid things like a 5 year old child but when he gets into battle he's like a fighting genius and some what over power from the start of the show. the same goes for goku he was stupid in many ways and seem to know only how to eat and fight also shown to be a fighting genius and throughout both of there stories they never change from the begin to end they tend to be the type that allow people to draw near them and change due to there straightforward nature.
tsuna is from the other bread similar to Kenchi from History's strongest disciple they or weak,cowardly, talent less, so so, uncool and with just about no friends at all type that we see in some shounen manga these or the types that the readers get to enjoy to things watching them get stronger physically if it's a fighting type of shounen manga and watching them slowly come from that pathetic self of theirs to a full fledged bad ass.
So for this character development topic about how tsuna haven't develop at all I will use kenchi as an example of good use of character development. So first like i said above those were the traits tsuna poses in the begin of the story but after meeting reborn and being cast into endless battles but realizing trough these battles he was able to find a place in the world and also gain friends and get closer to the girl he likes as well as becoming a better leader and calling shots well also being able to slowly become more confident in him self. oh you guy's may thing from hearing all of this that there seems to be ntn wrong with his character development well guess what your wrong yes with this it's actually good character development but hats only if the development actually sticks and continue to build up trough out the hold story. So let me explain mostly all what I mention above except for getting friends and getting closer to the girl he likes which can't really say has much to do with character development stays trough out the story but every thing else was reset after an arc was over and we go back to the every day type of arc. whats happen here is the the creator tends to remove all the development he gains trough these trials and turns him back to the character he starts of with in the begin he kept on saying he will never become the 10 boss I understand him saying that in the begin but after 3 4 5 6 arcs and he acts as the 10 boss and gives orders like a boss uses the property off his mafia family accept the heritage of his family and even claim to destroy it if he has to accept the legacy and continue down some of his predecessor path. but once those arcs or over the creator trows everything he gain from them or say during those arcs out the window like it never happen. which is extremely irritating when you feel like yes the mc is starting to become a bad ass and he might soon accept being the boss and then things will get even more awesome and then this happen. now from what I look at from this I think it has something to do with the fact that the creator is a gag manga artist and if you read enough of gag you would know that one of the biggest things in gag that's different from shounen is that what happen in the last chapter story stays in that chapter story.
For an example say in a gag manga story the mc cut off all his hair and turn bald for the hold chapter when the next chapter comes out it's like the previous one never appear there is no continuation of previous chapters. (tho there or still some gag manga that have continuation such as D-frag and so fort ) but most gag manga tend to let things that happen in previous chapters stay in that chapter so I believe the creator is doing something similar with letting every character development tsuna build up during those arcs reset and let him keep denying becoming the boss as a runing gag since she supposedly place it as a gag/shounen manga. this was a horrible mistake and a not funny joke if she had allow tsuna to grow as a character and kept the growth he gain and allow the experience that he gain trough out the battles stick to his character and showed even in his everyday life so that the readers can see him slowly progressing to what we hope he become it would of drawn and satisfy us more then just seeing every thing that was build up collapse in our face like a stupid unfunny joke. while im at it lets just try to cover the other few points but brief first the romance that was suppose to happen with the other 2 girls were horrible and never bear any fruit to the point I even wanted one of them to die to maybe at least serve a purpose to drive the mc to become what he should. also the mc never even once gain the balls to confess and always kept keeping his feelings inside like a wuss. and the ending was horrible I mean at first they had the future arc where they show every one of the characters future versions so we were super hype on hoping to see tsuna at least once but all we got was his lower half face and I think his back when this happen I thought of an idea for the creator to fully satisfy his readers to believe the hold book was worth the journey after seeing an ending where she atleats dedicated 4 pages of the last chapter to a future where tsuna is boss and his guradings discussing something and him giving orders like a bad ass and then they leaving to execute them whiles also showing him in a boss chair with ether one of the annoying chicks since none of them seem different to me coming in to give refreshment to them and they have a panel showing tsuna as well as her ring finger. and then maybe reborn busting trough the window and attempting to kick tsuna in the head like he always does but tsuna was able to doge by going hyper mode at will but reborn still finds a way to hit him calling him by the nick name he usually use then correcting him self saying something like I guess that nick name doesn't suit you anymore. with this it will show a lot of things such as tsuna growth physically and character development first we got him acting like a true boss and looking like one the same time and speaking and being more confident in his self we also seem him even strong enough to quickly sense reborn attack and able to enter hyper mode at will no longer needing to rely on the pills and even reborn praising him for his progress next we got to see him actually gain a lover and we get to see how his future self looks all of this will be enough for mostly all readers to satisfy there hunger for a good ending. but instead we got an ending that no different from there every day arcs
Kenchi on the other hand was done well un like his counterpart above he slowly grow trough each fight he had at first he was an extreme coward and barely can stand his ground for what he believe he was always afraid of sharp objects and didn't want to even come near them he never wanted anything to do with his weird friend organization shinnpaku alliance and was afraid to have the resolve to die in battle. but all of this slowly and obviously was shown to change trough out the show and even the people around him and that are in his school notice these obvious changes he become extremely strong step by step from being able to fight armatures in clubs to tugs outside school to semi pros in school to high class disciples known around the world and even hold off and come back alive against real masters and tell the end he him self finally reach grand master level. in the begin he was scared in fights and even when he did fight he was an extremely slow starter but later we see him slowly start to pick up in the amount of time he becomes serious in a fight to the point he starts from the begin we also saw how at first he could never face a girl but learn to cover this weakness by only using submission Technics on them instead of hitting. we watch him from having 0 friends to having a hold lot and even fully acting on his position as co commander of shinpaku alliance and relying on his friends to have his back we watch him half way trough the manga confess to the girl he likes and tell her that he won't fully confess tell he has the full strength to protect her. we also saw how he had many different fears and even up to some of the later chapters he still did but he laid a resolve that no matter what he faces he will never run and he stick to this to the end showing how he was able to face off with masters that can kill him in an instant and how he does what ever he believe is right never backing down no matter what he has to face. (this is showing that he has evolve slowly to the type like goku and luffy doing what they feel like doing and feel is right never listing to other people which is the road to the true strong) there or many things that showed how he develop as a character and the ending of this story was quite satisfying if there was anything i didn't like it was that I wish there was more chapters but I guess there wasn't anything left to build on. If you haven't read this yet then please do it's an awesome read 585 chapters (History's strongest disciple) there or other things that show character development but it will take to long and I've already write way to much so I can't even cover the 2 point but just to out it in a nut shell with the cards the creator had (mafia, linage, guardians that apart of your intermediate family, rings that represent different meaning and so on) each of these elements were enough for the creator to make the best shounen manga ever ether better then one piece and the others or on par as long as she used it properly but i guess since she wasn't a shounen manga artist it kinda bite her in the butt. they really didn't use much of the mafia elements and one of the main reason to is because of tsuna not accepting his heritage early in the story. anyway this what I would like to say quickly. thanks for reading my opinion and I hope you can read this properly my grammar sucks (but don't point that out please)
