There's a great piece called 'Baby Sans' Adventure'. It shows the baby underfell sans in a world full of challenges, and how his small but determined self overcomes them. The story is really engaging as it gives a fresh perspective on the character.
One popular 'baby underfell sans fanfiction' is 'The Tiny Terror'. It has an interesting take on the character in a baby form, with unique plot twists and character interactions.
Well, 'Underfell Sans: Baby Days' is also quite good. It delves deep into the backstory of how the character became what he is, even in his baby form. The author does a wonderful job of creating a vivid world around the baby underfell sans, with detailed descriptions of the setting and other characters that interact with him.
There's a really cool fanfic called 'FellSwap Encounters'. It delves deep into the relationship between underfell sans and underswap sans. It starts with a chance meeting and then shows how they gradually understand and support each other. The author does a great job of showing their different characteristics and how they complement one another.
There's also 'Sibling Rivalry Reimagined' which delves deep into how their personalities from their respective universes interact. It has some really interesting character development for both Sanses. It shows how their differences can lead to both conflict and unexpected understanding. The author does a great job of portraying their emotions and the way they communicate, which is quite different from the original game's interactions.
Well, I'm not sure about specific ones off - hand. But you could also check out some Undertale fanfiction forums. Sometimes fans share their favorite 'underfell sans x grillby' stories in those communities. They might even have reviews or summaries to help you decide which ones to read.
Often, the cuteness of the baby form is a key feature. Despite being from the Underfell universe which is usually more edgy, the baby version brings out a different side.
One popular 'underfell sans x underswap sans fanfic' is 'Twisted Bonds'. It explores their relationship in a really interesting way, with great character development.
There's also 'Unexpected Encounters'. This fanfiction delves deep into how underfell sans and underswap papyrus might interact. It starts with a chance meeting and then unfolds into a story full of twists and turns. Their personalities are really brought to life in this one. It shows how they overcome differences and form a special connection.
Searching for 'underfell sans x grillby yaoi fanfiction' can be an interesting adventure. You can start by looking at Tumblr. There are often fanfic writers who post their works there. Additionally, some Discord servers dedicated to the relevant fandom might also be a good place to look. Just be aware that the quality and content can vary greatly, so it might take some time to find something that suits your taste.
There's 'Sans - Bound'. This fanfiction focuses on the challenges they face when they are forced to work together. It's not just about their relationship but also about the world - building in the undertale and underfell universes. The descriptions of the settings are vivid and add to the overall charm of the story.
Well, in the world of 'underfell sans abuse fanfiction', 'The Abyss Within' stands out. It has a very detailed description of the abuse scenario and how Sans endures it. This fanfiction is not for the faint - hearted as it gets quite intense. Additionally, 'Hope in Desolation' is also a great read. It shows the glimmer of hope in Sans's life despite the abuse he has faced, and the way the author develops the story is really engaging.
One great 'underfell sans fanfiction' is 'A Darker Path'. It really delves into the darker aspects of Underfell Sans' character. Another good one could be 'Underfell Sans: Redemption'. It shows his journey towards a more positive change. And there's also 'The Underfell Sans Chronicles' which has a really interesting plot that keeps you hooked from start to finish.