What kind of light novel features a guy who gains powers when he kisses?

In fanfiction, when Naruto has the full Kyuubi, he often gains enhanced physical strength. He can deliver more powerful punches and kicks. His speed also increases significantly, allowing him to move so fast that his opponents can barely keep up.

Well, it can vary a lot. Sometimes he has to learn to control his newfound abilities and deal with the expectations that come with being an eld. There could also be social dynamics and power struggles within the eld community that he gets involved in.

It could be one where the extra protagonist has hidden talents or unique abilities that are gradually revealed throughout the story.

Maybe it's a story where cats have superpowers to solve mysteries or protect their human companions. There could be different powers like enhanced strength or the power of telepathy.

It's got a rich world-building and complex characters. The plot is full of action and adventure.

Maybe it's a mystery-themed light novel where the MC hides in the shadow to solve crimes or uncover secrets. The shadow could be a metaphor for their hidden identity or their way of operating unseen.

There are quite a few. One example could be 'The Alpha's Destiny' where the female lead is a strong and assertive alpha, leading the way in a fantasy world.

Well, there are many. One example could be 'The Betrayed Hero's Journey' where the MC is betrayed by his closest allies.

In this fanfiction, he could gain the power of energy absorption. This means he could absorb any type of energy, be it magical, alchemical, or even kinetic energy from attacks against him and then use it to his advantage. For example, if an enemy attacked him with a fire - based spell, he could absorb the energy and then release it back as a more powerful attack. Or he could gain the power of astral projection, allowing his spirit to leave his body and explore places or gather information that would be otherwise inaccessible.

Naruto might get a Zanpakuto that complements his existing powers. Since he has a strong connection to wind chakra, it could be a Zanpakuto with wind - based abilities. Maybe it could create powerful tornadoes or slices of wind that are sharper than his normal Rasengan - infused attacks.