He probably did... and/or got reincarnated...
Hear me out.. he is NOT mentioned thus far in Tokyo Chronos... plus Zaphikal is... rumored to be his father... and Zaphikal..he seemed evil... (or was evil if remembered correctly....) shame.. Raziel.. he was such a good kid but.... angels do fall... ;o;

NOOO I LOVE RAZIEL!!!!

I think the only none reincarnation too though is Michael... sadly... but... at least he is still him.. XD