>>2549044I wouldnt go nuts spending black pens on those decobromides unless the suit skill itself is very powerful.
They hand out SR bromides fairly frequently and have been known to do decobromide gachas in the past. Those usually appear with collab events however and if you play on steam there's no telling when the next one will be.
Those crossover SSR bromides also arent locked to one girl so I prefer them to SSR bromides from suits.
