Perhaps the reader is from the real world and somehow gets transported to the Bleach universe. Toshiro Hitsugaya is assigned to protect them while they try to find a way back home. During this time, they learn about each other's worlds and form a deep connection. Or, the reader could be an artist who is commissioned to paint a portrait of Toshiro, and through the sittings, they get to know each other on a personal level.
A plot could be that the reader is a new recruit in the Soul Society and Toshiro Hitsugaya becomes their mentor. He teaches them about their powers, the rules, and they develop a strong bond of respect and friendship over time. Another idea is that the reader has a special ability that is needed to solve a mystery in the Soul Society, and Toshiro teams up with them to figure it out.
Maybe there's a plot where Toshiro's ice powers interact in an unexpected way with the cold - based abilities in the RWBY universe. For instance, his ice could be stronger or have different properties. And he might have to train the RWBY characters in his unique combat style to face a powerful enemy. This could lead to some really interesting character interactions and battles.
You can check out websites like Fanfiction.net or Archive of Our Own. Look for stories tagged with 'Toshiro Hitsugaya' and 'reader insert' and then filter out the ones with 'lemon' or adult - themed tags. Some stories might focus on their adventures together in the Soul Society, or the development of a platonic relationship.
Another plot idea is that a powerful villain uses a jutsu to merge the worlds of 'Bleach' and 'Naruto'. Hitsugaya and Naruto meet and at first have trouble understanding each other's abilities and cultures. But as they face challenges together, they learn from one another. For example, Hitsugaya could teach Naruto some sword - fighting skills, while Naruto could show Hitsugaya how to use chakra more effectively.
In Toshiro Hitsugaya x Reader fanfiction, a prevalent theme is the power dynamic. Given Toshiro's high - ranking position as a Soul Reaper captain, there's an interesting exploration of how this affects his relationship with the reader. Another common theme is redemption. Maybe the reader has a past that needs redeeming, and Toshiro plays a role in that process. Additionally, the theme of friendship - turned - love is often seen. The two start as friends or comrades, and over time, their relationship evolves into something more romantic. These themes add depth and complexity to the fanfictions and keep readers engaged.
Well, a plot could be that a spell from the Harry Potter universe affects Toshiro Hitsugaya's zanpakuto. This causes some strange effects on his powers and he has to seek Harry's help to reverse it. Maybe Harry is on a quest to learn more about different forms of magic and is led to the Soul Society where he meets Toshiro. They then embark on a journey to discover a hidden magical knowledge that could benefit both their worlds. Also, a plot could involve a character from the Potterverse being a reincarnation of someone important in the Bleach world, and Toshiro and Harry have to figure out what it all means.
Often, there can be themes related to the power dynamics. Toshiro Hitsugaya has his own power and status in the Bleach universe, and how that interacts with the OC, especially in an emotional and sometimes romantic context, can be a theme. There may also be themes of self - discovery for both characters as they navigate their relationship. For example, the OC might learn more about herself through her relationship with Hitsugaya, and Hitsugaya might also grow in some aspects of his personality. Another aspect could be the theme of secrecy or forbidden love, as Hitsugaya is a significant character in the series and a relationship with an OC might not be something that is easily accepted in the Bleach world.
I'm not sure specifically which ones are considered 'good' as it depends on personal taste. However, you can try searching on fanfiction websites like FanFiction.net or Archive of Our Own. Look for ones with high ratings and positive reviews.
One plot idea could be that the reader is a hunter who has lost their faith, and Castiel helps them regain it. He shows them the good in the supernatural world and that not all angels or other beings are bad. Along the way, they form a deep bond based on mutual understanding and respect.
The reader was a new recruit in the Soul Reapers' ranks. Toshiro Hitsugaya was assigned to train the reader. At first, he was strict and all business. But as time passed, he noticed the reader's determination and unique spirit. The reader, on the other hand, was in awe of Toshiro's power and his sense of justice. They started having conversations outside of training, sharing their dreams and fears. Their relationship gradually grew into a beautiful love story, filled with mutual respect and admiration.
Another theme is growth. Both characters grow as individuals and in their relationship. Toshiro might learn to open up more emotionally, and the reader could gain confidence. In a story, the reader might encourage Toshiro to pursue his dreams outside of his captain duties, which helps him grow as a person and deepens their bond.