WARNING: This chapter will contain heavy sarcasm. Inspired from sarcastic writing advice, in case help to write plot is needed, feel free to check out the YouTube videos
Now, imagine your main character, easily stomping enemies, but he's alone, and that just can't do.
Some might believe that the character being better than the love interests would make them feel self conscious and useless and make them ignore the MC… ignore them!
Would you not like to be in a relationship where all your useful for is making boyfriend/girlfriend feel good? Or the eventual "power of boner ex machina"? Well that doesn't matter, it's not you in the relationship.
Now, how to make a relationship believable? Some would say to invest time them getting to know each other, having differences as no one is really like someone else to the core and possibly have characters break up and get with others as well, especially if teenagers… ignore them too, that would take several dozens of chapters worth of character building! Instead, have the main character show their power and have the others fall in love with him, also have him completely ignore it despite being able to read others every movement because the mystery keeps other reading.
Of course, there is one thing that will have characters come in like moths to the lamp, getting their eyes burned but not being able to stop watching this horridly painful beauty and wondering how long it will take for it to be discontinued.
Whoops, got too real there for a moment, still, my point was, make a love triangle! everyone loves 'em.
Here are some suggestions of how to romance some characters:
Naruto: Mostly being nice since childhood should be enough, though I heard that a hand through the chest is also something he is into (chidory™ , the fastest way to the hearth, sponsored by kakashi hatake and sasuke uchiha)
He is likely bisexual
Sasuke: Being nice to him before the massacre would make him quiet attached, other than that, trying to stop him from going after itachi will only strain a relationship.
He is likely heterosexual
Sakura: Be sasuke
like sasukesexual
Kakashi: Help him get over the death of rin and obito (by start of naruto, he has already got over it.) , don't put expectation on him (WARNING: might use chidori to get to your hearth)
Likely asexual, possibly heterosexual
Hinata: Don't put expectation on her, be positive
Heterosexual, possibly bisexual
Kiba: Like dogs (no zoophilia, hopefully), like having fun
Heterosexual
Shino: Like bugs, be calm.
Heterosexual
Kurenai: we don't have enough canon information
Heterosexual
Shikamaru: Be calm and controlled, be good at strategy and shoji, don't be lazy
Heterosexual
Choji: Don't call him fat, be able to cook well, be optimistic.
Heterosexual
Ino: Be black haired, be cool.
Heterosexual
Asuma: Not enough canon stuff to work wit
Heterosexual
Gaara: Don't die to Shikaku, be nice to him.
Painsexual as a teen, heterosexual once grown up.
Temari: Be good looking, be comparable to her in strength.
Heterosexual
Kankuro: Like face paint, puppets and bondage
His into dolls, enough said there.
Some more might be given later