Naruto x-over Bleach- Ichigo is a Cloud ninja and was part of a squad with Killer Bee and A. Killer bee and A are younger than cannon so a bit older than Itachi.
Naruto x-over Bleach- Ichigo, Uryuu and Chad as a three man squad under Urahara as Jounin instructor village of your choice.
Bleach x-over Final Fantasy VII- Ichigo is Sephiroth’s reincarnation, Shikai materia, Bankai Muramasa with Zangetsu elements.
Bleach x-over FF 7- After JENOVA collides with the Earth causing widespread death and destruction, Hueco Mundo and The SS are overflowing and can’t contain the number of souls so Squad 12 invention “liquidates” both spiritual planes creating the life stream. millenia later Shinra is founded and the afterlife's number 1 protector isn't to happy.
Bleach x-over Fairy Tail- Ichigo has the Lost Magic Balancer made up of the two opposite powers, from Zangetsu(calm) and Shiro(chaos) his personality will also be a mixture of the two and his own. He is a member of Grimoire Heart, slightly dark but sticks to his fundamental beliefs although slightly more fanatic. After the events on Tenrou Island Ichigo swears to take revenge on Zeref and creates a guild to do so (King's Pride name suggestion) after the 7 year time skip roughly on level of the top 4 wizard saints.
Harry Potter x-over Blue exorcist- Harry found around same time as Shura in similar manner is taught alongside her by the Paladin.
Bleach x-over K- Ichigo after losing his powers drifts and eventually finds HOMURA and is taken in and raised to succeed Mikoto and learn what it means to be a true King. After loss of Zangetsu and Shiro he goes slightly insane.
Bleach x-over Kenichi- Ichigo is Appachai’s first disciple in Thailand when Appa leaves for Ryozanpak stays to gain more experience, eventually meets up with his master again. Include the tiger.
Bleach x-over KHR- Ichigo is Reborn’s first disciple when Reborn was still an adult. Ichigo was experimented on by Aizen along with others Arrancar and human leads an escape similar to Mukuro. 2 other families made up of Hollows and Shinigami. Hollows have Earth flames and Shinigami have Sky flames. Ichigo is taught to be the next boss of the Shinigami, whereas Grimmjow will be the next Hollow boss. Ichigo contacts Reborn after the Ring Battles about finding the man with Iron Hat. Big Brother like to Tsuna and Dino.
Bleach x-over Fate/Zero- After the loss of his power Ichigo learns of his mother's heritage as a Mage and decides to learn. After a few years of learning he becomes aware of the upcoming Holy Grail War and so decides to participate. Summons Rider learns what it means to be a King. If you feel like it have Aizen die from Mugetsu and be summoned as Caster.
Demonata x-over Fate/Zero- Grubbs Grady is summoned as servant Caster by Kiritsugu (I thought their beliefs coincided) with a lode stone. Kah-Gash and Werewolf noble phantasm.
Harry Potter x-over Avengers- Where Harry's fight against Voldermort was more brutal. After the end he and his fighters are abandoned by the Ministry. So he forms a mercenary band from what was left of DA dealing with the magical and non-magical. Along their travels they meet a young Nick Fury, Harry is like a mentor showing him the ways of war. Years after they part ways Nick calls in a favour when New York is under attack from aliens. Inspired by Rain Seeker's the Snake and the Spider.
Harry Potter x-over James Bond- 10 years have passed since the events of Skyfall and James has been promoted to be the new M, with this promotion comes the information that there is a secret magical community living in Britain, as James looks into this in detail he discovered that a powerful wizard recently attempted to wipe out the non-magical people of Britain and was only stopped by chance by a infant wizard. So James decides to take matters into his own hands by taking this child and raising him to be a weapon against the wizards if they ever thretanded the people of Britain. Ruthless! James.