A great one often has well - developed characters. The Guardsman should have his own personality, whether he's a grizzled veteran or a fresh recruit. The Sister of Battle should also be a complex character with her beliefs and values. And the story should have an engaging plot, like a joint mission against a common enemy in the Warhammer 40k universe.
I'm not sure specifically about 'lemon' fanfics regarding Sister of Battle. 'Lemon' usually implies mature or inappropriate content which might not be in line with the official and proper portrayal of the Sisters of Battle. It's better to focus on more canon - compliant fanfics.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). There are often many user - generated stories in the Warhammer 40k category that involve Guardsmen and Sisters of Battle. Another option is to check out dedicated Warhammer 40k fan forums. Some fans might share their own fanfiction or recommend good ones there.
A good one often has well - developed characters. The Space Marine and the Sister of Battle should have distinct personalities that play off each other well. For example, the Space Marine's stoicism contrasting with the Sister's passion.
One good 'Sister of Battle vs Slaanesh' fanfiction could be one where the Sister of Battle uses her unwavering faith as a weapon against the corrupting influence of Slaanesh. For example, in a story I read, the Sister stands firm in a chaos - ridden world, her prayers acting like a shield against Slaanesh's temptations.
Some writers show the conflict through physical battles. The Sister of Battle, armed with her bolter and faith, faces off against the daemons of Slaanesh. These battles are not just about physical strength but also about mental and spiritual fortitude. The Sister has to constantly fight against the psychic influence that Slaanesh tries to impose on her during the fight.
It can start with mutual respect. For example, the Guardsman respects the combat skills and religious fervor of the Sister of Battle, while the Sister respects the tenacity and loyalty of the Guardsman. They can then be forced into situations where they have to rely on each other, like being trapped in a war - torn area and having to fight their way out together. This shared experience can deepen their relationship.
One plot idea could be that a Guardsman gets separated from his unit during a battle and is rescued by a Sister of Battle. They then have to work together to make their way back to safety while facing various enemies and challenges along the way. This could lead to a growing respect and friendship between them.
You can start by looking on popular fanfiction websites like Archive of Our Own. There are often tags and search filters that can help you narrow down to the Space Marine x Sister of Battle fics. Another option is to check out some Warhammer 40K - related forums. Fans there might share their favorite fics or even write their own.
Another theme is their relationships with other factions in the Warhammer 40,000 universe. They might interact with the Space Marines, the Imperial Guard or even face off against the forces of Chaos. These interactions can create interesting storylines, like a joint mission between the Sisters of Battle and the Space Marines where they have to overcome their differences to succeed.