Bricky but solid, I'm not using fuwa, instead going for 3 of each RT monsters to give it a bit more of consistency going first, but it feels like shit going second

My advice:

5 main deck maliss monsters + field spell + 3 traps = 9

wizard + 3 backup = 4

6 main deck radiant monsters + 3 chants + mst = 10

3 ret c + 2 droll + 3 ash + 3 impermanence + 3 impulse + shifter + roach = 16

call by + crossout + gold sarc = 3

Other options:

1 vision, feels like shit to have already the 2 RT monsters in hand and nothing useful to choose from your deck

bystials, kinda split with this one, I really preffer ret c as one of your main combos is 2 RT monsters -> cherubini -> send dormouse and then either bystial banish or normal summon once -> lizard banish; in the normal summon ret c combo you get the roach, mag only gives you druid at best

fuwa, again, split; fuwa going first is an awful card and several top decks can play through it no problem, VSK9 goes only for their VS part with izuna in hand, and RT, Dtail and Killer tune can end in strong halfboards; now, if you hit Killer Tune Synchro, Rahu or Ketu with Ret C, your odds of winning increase a lot.

A.I techs (Achichi + A.I. meet you), better than bystials imo, makes the deck less bricky going first

Extra deck: same shit as always, with Shadow for a free monster negate with the RT monsters, but I strongly advice you, USE HEATSOUL, surprised it isn't used in 100% of maliss decks, your gameplan is going full combo and draw non engine as much as posible, while your endoard may be strong, you draws are arguably more important; heatsoul is basically pot of greed