My Whole Clan Are Do-Gooders, but I Have a Rebellious Streak

Seeking the Ultimate Holy Scripture

The protagonist can repay evil with kindness, sacrifice himself for others, sacrifice his life for righteousness, not be selfish, not benefit himself at the expense of others, not favor his own people, and treat all living beings equally. I sincerely request a book, but it makes me feel uncomfortable when I see the darkness inside the protagonist.