Multiverse: Infinite Dragon God Sign-In at the Start

Transmigrating into the world of High School DxD, Su Yang obtained the God-Tier Sign-In System, starting by signing in with Ophis?

[Congratulations to the host for obtaining the reward--Vishnu's Ten Incarnations of the Origin of Hakoniwa!]

Incarnated as the spiritual fish Matisyahu, transforming into the 'Ark', a single wave churns the endless worlds. Incarnated as the world dragon Kurma, carrying the world on its back, walking through the boundless sea of stars...

Nangong Nazuna: A god from another realm has come to find me to fulfill a contract? (Panicked)

Emilia: You are my knight, Yang-kun~

Tatsumaki: He's just a ** who collects other people's things.

Ophis: My... contracted person...

Su Yang: Ophis, don't be like that, I'm not a Dragon Knight.

Even though I've become a god, please don't worship me. Well... if you're a girl, that's fine?

(High School DxD - Strike the Blood - ... - Hakoniwa's Unification... Daily Side Stories)