High Martial: I Am an Angel, and I Will Bring You Salvation

First, a note: the protagonist is Lin Tianxiang.

[Superpowers] + [System] + [No Female Lead] + [Not Mindless] + [Morally Ambiguous] + [Revenge] + [Dark Growth]

When the world is no longer ordinary! When strength becomes the only truth! When fairness no longer exists! When villains walk free!

I walk the line between good and evil.

"You ask who I am?"

"I am an angel, here to bring you salvation. Repent sincerely."

"Host's emotions have reached their peak. The Good and Evil Choice System is now bound."

[Choice 1: The Good Route. Your C-rank Superpower, 'Pair of Wings,' will evolve into the SSS-rank 'Angel of Goodness.']

[Choice 2: The Evil Route. Your C-rank Superpower, 'Pair of Wings,' will evolve into the SSS-rank 'Fallen Angel.']

[The Host must make a choice within 30 seconds. The Good Route grants the powers of healing and protection, but you must bear the 'Emotional Shackles.' Every choice that goes against kindness will cause your soul to burn with pain. The Evil Route grants control over destruction and manipulation, but you will gradually lose your humanity until you become a puppet of your own desires. Please make your choice within 30 seconds.]

"If I choose good, can I save my younger brother?"

[Time cannot be reversed. Superpowers only affect the present and the future.]

I... I choose...