I have always wanted him ever since you posted the first picture of him. But I think my husband would be mad if I got another Betta.
Also, you never know when it comes to Bettas about recovering. When I first got Abacus, I thought he was going to die. He just drooped around and did not eat anything for weeks, though once he ate a little piece of pea. Then all the sudden he was better, and now he is perfectly fine.
I hope Helios makes it, it would be such a shame for a Betta that beautiful to pass away.
Bettas - Giovanni (HM), Burly (HMPK Giant), Potato (EEHM), Vesper (HMPK).