some_writer
If you think Ichigos story is finished then make a new fic, people started reading this one for Ichigo and Bleach, not some other MC. I still would like to see this Ichigo in other verses, but it's honestly up to you. You could just do a dxd fic with a new Issei, like you did with this one, you could even do the same for DB with a new Goku lol. Those would be a fun read imo. I definitely do not want this one focusing on other MCs though. One MC per fic pls.
I'll give my opinion here. you can do the following , another 5 or 7 chapters around . explaining what happens after the end of bleach, telling the relationships and etc. then if you want to make a dxd or dragon ball fic, you can make ichigo be im "ester egg" or something like that. There is also the option to just make the dxd fic separate from the main one, as im ispin off from the main series, and continue with ichigo in other universes. I think those would be the ones that would please people the most, but for me it doesn't matter, I want a fic or story that you're telling. ( Google translator)