Another option is to check out some dedicated fanfiction blogs. They often curate and review different fanfictions. Look for blogs that focus on the source material related to nikolai and takeo. By exploring these, you can discover some hidden gems of nikolai x takeo fanfiction.
The theme of redemption can also be present. Maybe one of them has a troubled past, and through their relationship with the other, they find a way to redeem themselves. It could be that nikolai has made some mistakes in the past, but takeo's influence helps him to become a better person, and vice versa. This adds an interesting layer of depth to their relationship in the fanfiction.
There might be a 'Takeo X Men fanfic' where Takeo has a special power that the X - Men need to combat a new and powerful enemy. For example, if Takeo can control time in some way, it could add an interesting dynamic to the X - Men's battles and strategies. Writers often create these crossovers to explore new relationships and plotlines within the existing X - Men universe.
Rather than focusing on 'lemon' fanfiction which often implies mature content, you could look for general Takeo and Yamato fanfiction. You might find some heartwarming and cute stories about their relationship. Try using search engines with filters for fanfiction and their names. Maybe you'll discover some great stories that focus on their friendship, love, and adventures together.
I'm not really sure which specific fanfiction stories in this category are considered 'good' as it can be very subjective. You could try searching on popular fanfiction websites like Archive of Our Own. They have a large collection of Grishaverse fanfictions, and you might be able to find some nikolai x the darkling stories there.
Archive of Our Own (AO3) is a great place to start. It has a vast collection of fanfictions from various fandoms, including the Grishaverse where nikolai and the darkling are from. Just use the search function and type in relevant keywords like 'nikolai x the darkling' and see if any stories with the specific elements you want come up.
In fanfiction, Takeo is often depicted as a big - hearted and somewhat clumsy guy. His physical appearance, which might be larger or more imposing in the original work, is sometimes used as a contrast to his gentle and kind nature. Yamato, on the other hand, is usually shown as sweet and understanding. She is often the one who sees past Takeo's exterior and values his inner qualities. Their relationship in fanfiction usually revolves around mutual understanding, growth, and a deepening of their connection.
One common theme is the discovery of new powers. Takeo might have powers that are different from what the X - Men are used to, and the story could revolve around how they all figure out the extent of these powers.
One popular theme is their relationship development. Fans like to explore how their feelings for each other grow and change over time, from initial attraction to deeper love.
There's a fanfiction called 'Zoya's Choice' which delves into Zoya's internal struggle between her loyalty to Ravka and her growing feelings for Nikolai. It's a really interesting take on their relationship as it's told from Zoya's perspective.
One great 'Nikolai Lantsov x Reader Fanfic' is 'A Royal Encounter'. It beautifully portrays the relationship between Nikolai and the reader. The story is set in the opulent world of the Ravkan court, and the author does an excellent job of showing the initial attraction and the development of deeper feelings. It has a perfect blend of romance, court intrigue, and the charm of Nikolai's character.