Senatara

Vero, a normal high school student, dies after a chain of unfortunate events. He gets reincarnated into a certain being in space. After eating up other beings similiar to his new self but without consciousness, he gets the qualification to ascend into a higher being---a Celestial. Yet something goes wrong during his ascension. Due to him retaining his human mind, he is unable to ascend into a normal Celestial. His being gets split into two: One inheriting his human mind together his newly acquired divine authority and the other, a new ego similar to his own, yet with a divine mind with godly processing power. Wait, the other is a she!?

It's so nice to be immortal, right? You can have as much time as you want. For wizards who require several lifetimes to master their craft, immortality equate to heaven. Sadly, that said immortality is being taken from them by force.

Aleksandra Bauer, a boy with the name of a girl was calmly living his high school life when he, all of the sudden, dies, and somehow managed to be reincarnated into another world, and gets reincarnated into a child's body. That child happened to be a seriously rich merchant's daughter. Now he's a girl with the mind of a boy. Wait, what?