Water Breathing to graduate

Banjiro then left to study under Sakonji Urokodaki. Banjiro may already have become a pretty great master of the Sun Sword, but he knew the techniques of the Water Style and Water Breathing could diversify his fighting portfolio. Thus, he went to study under Urokodaki, letting Nezuko adopt a sleeping style of recuperation that deviated from Muzan's control, with her occasionally awakening. Yet, this wasn't all, as Banjiro was playing a vicious game, convincing Nezuko that his cum could be a worthwhile substitute, since it is still the flesh of a man. Thus, Nezuko started awakening more, her body fully releasing as she liked to hug Banjiro in her tits, her big brother becoming her little stud as they rocked Urokodaki's home each night. With this change, her detachment from Muzan's control advanced rapidly as she became a unique entity charged through cum and sleep. In this state, she began unlocking her secondary form when shit got really exciting, her libido, size, horn, and nipples growing as she wanted his warmth more and more.

Soon, Nezuko got strong enough that, and their sexual escapades advanced so much, that she walked out into the sun on numerous occasions, growing adjusted to its purifying light. With this change, she was able to join in Banjiro's training, often leading to sex or saucy moments as they pressed their bodies together. Although, it was far more cute when Nezuko was the one guiding Banjiro. When Nezuko is trying to guide Banjiro's strikes, her whole body will envelop him as her large, meaty legs hide his form while her big hands smoothly move onto his own, her tits sitting on and around his head. But if it's Banjiro trying to teach Nezuko, he will be like a child trying to hump their mommy's leg or getting a big sniff up her cheeks as Nezuko delights in dominating him or corrupting the moment.

They still learned the Sun Sword and Sun Breathing, but they had a lot of fun and sex as they prepared to undertake the ascension rite of Demon Slayers in the Blossom Mountains. Banjiro had prepared Nezuko for this, just like her sun aversion, displaying her resistance to these dangers with a flower in her hair from those blossom trees that ward off Demons. Nezuko also had a very big pink katana, which was thicker than most blades, but it was adjusted for the thickness and weight to have a greater cutting power at higher release of forces. She also had thinner blades that were far more traditional to katana styles, as well as a short katana that seemed like a knife, but her main blade was the pink one.

It was a hassle to have these made for her, due to her being a Demon, under Muzan or not, but she got them thanks to Banjiro and Urokodaki pushing for her rights. Regardless, she had her blades and was participating in the trial, allowing Banjiro and Nezuko to go off in their own directions.

As they went in, Banjiro quickly looked for the demon responsible for killing Urokodaki's other disciples, using teachings in mystical arts that go unnoticed, as the story focuses on Demons and samurai. Still, Banjiro learned them, helping him see spirits and apply holy wards to his weapons that greatly improved his fighting capability as he killed the Demon, meeting up with Nezuko and the others to form his friendship of lightning and boar. It's there that Banjiro realised he fucked up a little as he saw a female Inosuke, realising the joke he mumbled under his breath must have been taken seriously. Ultimately, Banjiro wasn't complaining. Inosuke was the prettiest person in the whole show, and as a woman, she had an attractive six pack and pair of tits nestled in bandages that really made her a hot topic to Banjiro's loins. Because of this, Banjiro was a little out of it during the congratulatory ceremony, causing everyone to notice, especially Nezuko and Inosuke. Together, they pulled Banjiro aside, led by Nezuko, who whispered of Banjiro's manliness since Banjiro often talked about those he'd meet.

Once aside, Inosuke acted like a tsundere as she told him she didn't want a mate, having to deal with Feudal Japan's sexist biases her whole life, which gave her some practical experience in this matter. Hearing this, Banjiro said he was okay with that, leaving Nezuko flabbergasted as she hugged her giant body against his, her upper boob view of giant melons causing even Inosuke to blush in confusion.

Despite the situation, Banjiro tried to pretend to ignore Nezuko as he opened his hand to Inosuke, asking if they could become friends or comrades, getting a handshake in return as she said "maybe" and "we'll see."

It was clear she didn't think much of Banjiro, but as Banjiro touched her hand, the two gripped tightly, leaving the two intrigued by the other before Nezuko slapped Banjiro's back so hard he went crashing into Inosuke's breasts, causing a gasp and scream as she pushed him off.

Banjiro then tried apologising, but his truly gigantic dick shot out like a mountain in an open pasture. Looking at it, Inosuke was both intrigued and horrified as she looked away, walking off, leaving Banjiro to have a 20-minute quickie with Nezuko, leaving her tired and dishevelled until they caught up to Inosuke and Zenitsu. The four then began chatting and walking by each other's side as Nezuko fixed her long Demon Slayer dress Banjiro created with Irish kilt inspiration, allowing Nezuko to move swiftly and feel a nice breeze... also she regularly used its length to have Banjiro worship or tongue-fuck her cunt and ass. Sometimes, she'd even just let him lay down as she used her thighs and feet like he was her little fuck puppy.