The bottleneck.
Realizing the strange actions of his ring, Alvine raised his right hand and looked at the ring that was now like new, with a crystalline red color and two exquisite jewels above it.
Seeing this, Alvine did not stop sucking Linn's blood; he continued to feed himself until he restored the blood in his veins.
Thus, after an extra minute, he removed his fangs from Linn's flawless skin, then licked the trickle of blood dripping on her arm.
"Not even a thank you for saving your life?" She asked, watching her hand regenerate faster than Alvine's.
'Sigh, as I thought, she reminds me that I now owe her a debt; I did well to restore my vitality through her blood. Otherwise, I will regret it in the future.' He said to Himself, staring at her.
"Thank you, I guess?" Alvine replied while looking at the ring that had captives all his attention.
"Do you suppose? Sigh, give up. If not, What is this ring for now, and what is its rank?"