Eater Blade: Grinding in Apocalypse - Chapter 8: CHAIN SLAVE.

Betrayed and left for dead, Richard Blackwood—formerly known as the world renowned hero Astralis—awakens a decade later to find the world has moved on, and an imposter now wears his mantle. Disguised as a rookie in the Mage Guild, he quietly hunts for answers.'If my little sister is levelled above me, then what about everyone else? How much stronger have the bastards who betrayed me grown while I was dead?'Richard must grow stronger once again, and rise much higher than the S-Rank.'What the fuck? I almost die, and I get a power up?'Not harem.

Six months ago, tens of thousands of black phantom towers appeared all over the world, floating above the cities. Chemists, physicists, religious people… all of them could do nothing.

Six months later, people became used to the towers and no longer paid them attention.

One day, Tang Mo saw a flying insect crash into it instead of going through it. The next day, a sharp and clear child-like voice issued an announcement to all humans.

“Ding dong! November 15th, 2017. The earth is online.”

The black tower’s three iron-clad rules:

1. Everything is explained by the black tower.

2. 6 o’clock to 18 o’clock is the game time.

3. All players, please strive to attack the tower.

- Description from Novelupdates

In the shadow of Silver Peak Mountain, the Winter Moon Festival approaches - a party where wolves find their true mates. For 18-year-old Lily Carter, being an omega means living on the edges of pack life, watching others find love while she expects to be paired with another forgotten omega. All her life, she's watched Luna, the Beta's daughter, receive admiration from everyone - especially from the Alpha's triplet boys who will one day lead the pack.But on the night of Lily's 18th birthday, which falls during the festival, her world shatters when her fated mate mark shows - linking her to one of the three powerful brothers. Now Lily must manage jealousy, dangerous pack politics, and her own insecurities as she tries to discover which brother is truly meant for her. As threats emerge from within and outside the pack, Lily discovers hidden strengths that show she's far more than “just an omega.” With three potential mates - the charming diplomat, the fierce warrior, and the thoughtful scholar - Lily's destiny is far greater than anyone could have dreamed.