There could be some of the more benevolent yokai who see Ichigo as a potential ally. For example, the werewolf Koga might recognize Ichigo's strength and see an opportunity to team up with him against common enemies. Maybe even some of the teachers at the academy who are tired of the chaos and power plays could join forces with Ichigo.
In the world of this fanfiction, Ichigo's allies could come from unexpected places. There might be a shy yokai who is impressed by Ichigo's confidence and power and decides to help him. Or perhaps a group of yokai misfits who see Ichigo as a way to change the status quo at the academy and improve their own situations. His godlike nature could attract those who are seeking change or protection.
One potential ally could be a friendly youkai student who is intrigued by Ichigo's godlike powers. Maybe someone who is an outcast among the youkai and sees Ichigo as a kindred spirit.
Well, Ichigo might have all kinds of crazy adventures at Yokai Academy. He could use his godlike powers to deal with the various yokai there, maybe make some unlikely friends among the yokai students, or face off against powerful yokai villains.
One possible ally could be a powerful mage from a different anime in the crossover. This mage could help Ichigo understand the strange magic or energy in the new world he is stuck in. Also, Uryu might be an ally. His Quincy abilities could complement Ichigo's powers in Mugetsu form as they face new threats together.
Well, it could be about Ichigo, with his godlike powers, entering Youkai Academy and facing various challenges there. Maybe he has to hide his true nature from the other students, who are mostly youkai. He might also get involved in some power struggles within the academy.
Renji could be a key character. He could be a senior student who at first is a bit tough on Ichigo but later becomes a mentor. Orihime could also be there, and she might be in the same class as Ichigo, providing some emotional support and her own unique skills in the academy setting.
One potential antagonist could be an ancient evil that is awakened by Ichigo's newfound power. This entity might see Ichigo as a threat or as a means to achieve its own dark goals.
Maybe Naruto from Naruto could be a crossover character. His ninja skills and Ichigo's combat abilities could create some unique fight scenes. Also, their different ideologies about friendship and power could lead to some great character interactions.
Definitely Hermione. She is smart and would be able to help Ichigo understand the complex magic world. Also, Hagrid. He is kind - hearted and has a lot of knowledge about magical creatures, which could be useful for Ichigo.
He could interact with Tsukune, the main human character in the Yokai Academy setting. They might share their experiences of being different in their respective worlds.
Rukia could be a character. She might come to Ichigo's rescue when she hears about his situation with the tentacles. She could use her own powers to freeze or cut through the tentacles. Another potential character is Uryu. He could use his Quincy skills to disrupt the energy of the tentacles. And there's also Orihime, who might use her shield - like abilities to protect Ichigo from the tentacles.