In DxD with Sign-In System!

Transmigrated into DxD World—Kuoh Town, Hibari Kyoya. an average student, spent 18 agonizing years in the world fully aware of the dangers, knowing he is utterly powerless in a world of gods and monsters, Until...[Ding! Sign-In System loading… 20%… 50%… 80%… 100%.]Destiny, it seems.. has a cruel sense of humor. A [Sign-In System], long overdue, finally bursts to life within him, offering a chance at survival, a chance at power...[Ding! Congratulations! You have received the Rainbow-Grade Gift Bag!]...He then started completing System's tasks, accumulating even greater rewards.[Ding! Task completed. Reward: Perfect Rumble-Rumble Fruit (Weakness to water Removed).][Ding! Task completed. Congratulations to the host for obtaining the Flying Thunder God Technique!]