In the 'ichigo turns into a baby fanfiction', his relationships would change significantly. For example, Rukia might take on a more motherly role towards him. His friends would be very confused at first but then would do their best to keep him safe and figure out how to turn him back. Also, his enemies might see this as an opportunity to finally get rid of him, but his friends would surely not let that happen.
Rukia could be the main caregiver. She has a close bond with Ichigo and has always been there for him. She would probably be the most likely to take on the role of looking after him, making sure he's fed, clean, and safe.
Ichigo and Tia could be characters from a specific anime or manga series. Without more context, it's hard to say exactly which ones, but they're likely to be characters with unique personalities and abilities that fans have decided to pair up and give a baby in this fanfiction.
One idea could be that in this fanfiction, Wolverine turns into a baby due to a powerful mutant's accidental spell. The X - Men then have to take care of him while also trying to find a way to reverse the transformation. They might discover new aspects of Wolverine's personality as a baby, like his unwavering determination is now shown through his attempts to crawl towards danger.
In fanfiction, the idea of Ichigo and Halibel having a baby can lead to very interesting stories. It would combine the unique powers and personalities of both characters. For example, the baby could inherit Ichigo's Shinigami powers and Halibel's Arrancar abilities, creating a truly powerful and unique being. This concept could also explore how the two different worlds they come from, the Soul Society and Hueco Mundo, would react to such a union.
One possible plot could be that Ichigo, as a female hollow, struggles to control her new form and its instincts. She might face discrimination from both Soul Reapers and other Hollows. For example, some Soul Reapers might see her as an even greater threat now, while Hollows could try to either recruit or eliminate her.
One possible plot could be that Ichigo is hit by a strange Hollow attack that not only changes his physical form to a girl but also gives him new powers. He then has to adapt to this new body while still facing the usual threats in the Bleach universe. His friends might initially be shocked but quickly accept him and help him figure out how to reverse the transformation while still using his new - girl - form - related powers to fight enemies.
Perhaps the story could start with Ichigo being experimented on by a rogue group of scientists or powerful Hollows. They accidentally turn him into a female Arrancar. Ichigo then has to adapt to her new physical form. She might discover new abilities that are unique to female Arrancars, like a different type of Cero or Sonido. Along the way, she could make new allies among the Arrancars who see her as an opportunity for change, and she tries to use her new position to bring peace between the warring factions.
His friends Orihime and Chad would probably be main characters. Orihime could be very motherly towards baby Ichigo, always making sure he's comfortable. Chad would be the strong protector, making sure no harm comes to the baby.
One idea could be that a villain's new invention accidentally zaps Kim and turns her into a baby. Her sidekick Ron has to take care of her while also trying to find a way to reverse the effect. He might struggle with basic baby - care tasks like changing diapers and feeding her, all while keeping her safe from the villain who might want to take advantage of her weakened state.