One consequence could be extreme physical exhaustion. Just like in the original series, opening the gates takes a toll on the body. So Naruto might find himself unable to move or fight for a while after opening the gates in fanfiction.
One interesting scenario could be Naruto opening the gates in a new and unexpected way, perhaps using a combination of his Sage Mode and the gate - opening technique to achieve a super - powered state. Another could be him teaching others how to open the gates more effectively, like training Sakura to open the gates for enhanced physical strength in combat.
Another plotline might involve Naruto opening the inner gates during a crucial battle where he is severely outmatched. His use of this extreme power could turn the tide of the battle and also earn him new respect from his enemies. He could also face the consequences of using such a powerful and dangerous technique, like dealing with the extreme physical strain it causes in new and unexpected ways.
In certain fanfictions, Jiraiya could be involved. He might be the one who discovers Naruto's potential to open the gates in a unique way. He could train Naruto further, teaching him how to combine the power from opening the gates with his other jutsu. Also, Hinata could be around, cheering Naruto on when he shows off his gate - opening skills during a battle or a training session.
Obviously Naruto himself, as the title implies he is the one opening the inner gates. Rock Lee could also be involved as he is well - known for his use of the inner gate techniques in the original series. He could either be a mentor to Naruto or compete with him to see who can master the gates better.
His friends' reactions would vary greatly. Shikamaru would be impressed but also concerned about the implications. He'd start thinking about the strategic advantages and disadvantages of Naruto having this power. Choji would be excited and would see Naruto as an even greater protector of the village. Ino would be a bit scared at first, seeing how Naruto's power seems almost uncontrollable when he first shows it. But as she realizes that Naruto has it under control, she would be more supportive. And Hinata would be the most supportive of all. She would be there for Naruto, believing in him no matter what, and would offer her gentle words of encouragement.
One interesting concept could be a character unlocking the hidden potential of the chakra gates in a unique way. For example, they might discover a new sequence of opening the gates that gives them powers beyond what was thought possible in the original Naruto lore.
A Naruto Gates of Babylon fanfiction is a creative blend of the Naruto universe and the concept of the Gates of Babylon from another series. It might involve Naruto characters having access to the powerful abilities associated with the Gates of Babylon, like summoning various weapons. This can lead to really interesting battle scenarios and new power - up dynamics within the Naruto world.
Fanfiction can expand on chakra gates training by introducing new training regimens. For example, a fanfic might have a character train in a special chakra - rich environment that accelerates their understanding of the chakra gates.
Maybe a fanfiction where an older Naruto, who has mastered the eight gates, passes on his knowledge to a new generation of ninjas. The story could focus on the challenges the students face in learning such a dangerous and powerful technique, and how Naruto helps them overcome their fears and limitations.