rukia and aizen

One idea could be that Aizen kidnaps them to use Ichigo's power and Rukia's knowledge of Soul Society for his own dark plans. He might want to study Ichigo's unique Hollow - Shinigami powers up close and use Rukia as a bargaining chip with Soul Society.

You can try searching on popular fanfic platforms like Fanfiction.net or Archive of Our Own. Just use the keywords 'Aizen - Obsessed Ichigo Rukia' in their search bars, and you might find relevant fanfics.

Aizen might be motivated by power. Ichigo has a very unique power set that Aizen may want to harness for himself. And Rukia, being from Soul Society, could be used as a way to gain information or leverage against Soul Society.

One of the things that can make it interesting is the exploration of different character arcs. Aizen's obsession can be a catalyst for Ichigo and Rukia to grow in ways they might not have in the original story. It can also bring out different sides of their personalities. For example, Ichigo might become more determined to protect Rukia from Aizen, showing a deeper level of his loyalty. Rukia, on the other hand, could develop new strategies to deal with Aizen's threat, highlighting her intelligence and resourcefulness. Additionally, the fanfic could introduce new settings or concepts related to Aizen's obsession, such as alternate dimensions or new forms of power, which can keep readers engaged.

Maybe Aizen has created a false asylum as part of a new experiment. He lures Ichigo and Rukia into it, and they have to find a way to escape while also dealing with the illusions and traps Aizen has set up. In the process, they could learn more about Aizen's motives and past, and perhaps even find a way to defeat him once and for all.

One possible storyline could be a story where Ichigo and Rukia have to team up against Aizen's new scheme. They gather a gang of their friends and allies from the Soul Society and the human world. They train together, combining their powers in unique ways to face Aizen's powerful minions. Along the way, there could be some character development for each member of the gang, like Ichigo learning a new form of his Zanpakuto through the guidance of an old Soul Reaper in the group.

Aizen might be initially dismissive, thinking it's just another mortal event. But as he realizes the potential power the baby could possess, he could become envious or see it as a new pawn in his schemes. He might start observing from the shadows, waiting for the right moment to make his move.

The combination of these characters. Aizen is a complex and powerful villain, Ichigo is the determined hero, and Rukia has her own unique charm. When you add Aslem into the mix, there are so many possibilities for different storylines. It could be about power struggles, or about forging new alliances, which is very appealing.

You can start by looking on fanfiction platforms like FanFiction.net or Archive of Our Own (AO3). These sites have a vast collection of fanfics related to 'Bleach' which might include the characters Aizen, Ichigo, and Rukia in asylum - related scenarios. Just use the search function and type in relevant keywords.

One interesting storyline could be about Aizen's redemption. Imagine a fanfic where Ichigo and Rukia play a role in helping Aizen see the error of his ways. Another could be a story where they all have to work together to face a new, more powerful enemy that is threatening the Soul Society and the human world.