A Storm War. A Fallen God. A New King Rising.
The most explosive volume of Astra-Link so far.

When the Northern Seal collapses at 02:00 hours, an unstoppable Asura invasion tears through the Himalayas. The legendary Fortress Indrapura becomes humanity’s last shield — and Aryan Sharma, forced into a draft he never chose, becomes their unexpected commander.

But nothing prepares him for the horrors waiting on the front line:

⚡ Wyvern swarms blotting out the sun
⚡ Mind-controlled soldiers turning against their own
⚡ A traitor inside the fortress
⚡ General Megha — the Storm Lord who killed Indra

As the shield fails and the walls crumble, Aryan must make impossible choices:
Send friends to near-certain death. Hold collapsing lines with no reinforcements. Face the guilt of every life lost under his command.

When all hope dies, the Astra-Chakra awakens its forbidden form — Avatar: Indra, the God of Thunder reborn.

The final battle between storm and storm shakes the skies… but the aftermath reveals a chilling truth:
The next war won’t be on Earth.
To claim the Fifth Key, Aryan must cross into the Spirit Realm — and walk into death itself.

Perfect for fans of:
✔ Anime-style action
✔ Emotional war arcs
✔ Mythology × sci-fi fusion
✔ Avatar-like transformations
✔ High-stakes teen heroes

Astra-Link Volume 4: The Thunder of Indra delivers god-tier battles, heartbreak, political intrigue, and the reveal that sends the series into its darkest arc yet.