Demon Lord's Reincarnation

Ren was shocked by the scene before him, as out of nowhere all of those from the Temple of Light that were still alive suddenly pulled out similar-looking daggers and stabbed themselves in their hearts. Ren couldn't understand why they did that. These people even as they were losing would never succumb to despair as their belief in their Goddess was unshakeable, so it wasn't possible that have committed suicide out of despair. 

As Ren was getting confused as to what was happening, it was at that very moment he felt massive energy from above. Ren immediately understood what was happening as the vicious smile on his face grew even wider. 

"Tsukiyomi, stand aside and let me deal with this! If you get in my way I will never forgive you!" Seeing the excitement on Ren's face Tsukiyomi shrugged her shoulders and sighed. She stepped to the side to watch the coming battle. 

'So this incarnation still has the same crazed battle intent. Well, it doesn't matter, the moment I see him in a dire situation I'll swoop in and save him. This time, this time for sure I won't allow you to die before my eyes again. As I promised all those years ago, no matter how broken you become I'll be sure to fix you.'

...

The energy above grew more and more as a shining light parted the clouds. From within the clouds, a figure emerged it was the familiar figure of the Goddess of Light, but unlike their first meeting she was wearing proper armor and had a sword and shield at hand. It wasn't just her wearing proper equipment, the current Goddess of Light was emitting divine energy that was beyond what she displayed before. Compared to the current Goddess of Light who was like a warrior, the one he and the others met before was like a child.

The Goddess of Light looked at the smiling Ren and frowned. She then noticed the Ethereal standing beside him. She had knowledge about the race that was called the failed weapons of the Gods, yet this was the first time she has actually seen one. Still, by the looks of it, the Ethereal wouldn't join in the fight. The Goddess of Light then went back to glaring at Ren. 

"Have you any idea of what you've done?" 

"What is it, I killed those that attacked me? Don't make it sound like it's my fault when they were the ones who came to provoke me." 

"If you were smart, you would've never returned here. I already allowed you to flee one time, but now there will not be a second time." Wings of Light sprouted behind the Goddess of Light. The Goddess who was flying above the clouds had her sword pointed towards Ren. 

"If I remember correctly, you didn't let me go, you had no choice but to let me go." Ren summoned a multitude of weapons from within his shadow. 

"Hmph, you have killed thousands of my believers. Your crimes, your sins are too heavy to be forgiven. So it's time for you to die!" The Goddess of Light shouted as she made a piercing attack at a speed that was as fast as light itself. Multiple rays of light descended towards Ren who evaded each one.

The Goddess of Light then appeared behind Ren and was about to pierce him with her sword. Yet the moment the sword was about to stab Ren multiple weapons appeared and blocked the Goddess of Light's sword. Despite the weapons blocking her sword's path, her sword had easily blown away all the weapons that blocked her. Still, that was enough to hit, for that delay gave Ren the time he needed to dodge the incoming strike. 

Ren then used this moment to counter, as he swung his arm that had grabbed hold of a spear. The spear went straight for the Goddess of Light's head, yet the moment it got near it phase through her. What was hit was simply the Goddess's after image. 

The Goddess of Light was able to once again get behind Ren, she then bumped Ren using her shield. Ren flew across the battlefield, and as he was getting his bearings back he felt something slice through his right arm. 

Ren quickly took his sliced arm and reattached it using his mana. As he slid through the battlefield, he noticed that the Goddess of Light disappeared from his sight. Ren stomped onto the ground and created a wall of earth that surrounded him. Suddenly a beam of light sliced through the wall of earth as if it was paper. 

Ren then used Snertal to block the beam that was about to slice his head. Yet despite his efforts, the beam was able to push him to the side. Ren then saw a sword flying towards him, Ren deflected the sword and it was at that moment the Goddess of Light appeared before him and was about to smack him with her shield. Ren could not get the arm he used to deflect to come back in time to block the incoming attack, also he was in an awkward position and he wasn't fast enough to evade. 

Ren quickly used his Spirit Aura to strengthen the body part the Goddess of Light was about to hit. Still, even after doing that, the moment the shield hit his abdomen that was hardened using Spirit Aura Ren almost puked, that was how hard the hit was. 

The Goddess of Light followed up that attack with a close-quarters beam of light. Upon contact with the beam of light, the ground exploded and a mountain of dust flew upward. The Goddess of Light took a step back and stopped attacking as she suddenly felt something was wrong. 

...

'So this is the full power of a world deity... HOW AWESOME, HOW INCREDIBLE!' Ren couldn't help but laugh heartily as his excitement reached a whole new level. 

"HAHAHAHA, you're better than I ever expected O' Goddess of Light! I see I see, so you weren't trash! Now that you have shown me your full might, allow me to reciprocate!"