Name: Akio Hoshikawa "Aqua Hoshino"
Age: 16

Background: He was a doctor in past life but it was reincarnated as Ai Hoshino child. After having the trauma that her mother was killed few years later he finally met his father. But before he did that he stabbed himself and pushes him together as both of them fall off the river. Aqua Hoshino died in the process. He never knew that the overlord of light would give him a seed of Agito. Seeing how the bravery to protect his sister from Hikaru. After gaining the Seed the overlord of light renamed him as Akio Hoshikawa that is similar to his old name as he is sent into another world where he won't remembering anything from his past or anyone in this world.

Forms:

Agito

Storm Form

Flame Form

Trinity Form

Burning Form

Shining Form

End of Bio.

So I came up with Aqua Hoshino's name Akio Hoshikawa similar to Tetsuya Sawaki "Shouichi Tsugami" name.