I drew 4s into riichi-only tenpai. Maka wanted me to riichi into a 7s single tile wait (38-48, discard-riichi). I didn't take it because it puts me at risk when I don't need the points, and left lord has a pinzu honitsu that I can't defend against if I riichi.
Although not riiching backfired as I would've gotten ippatsu. Here, I chii 7s and discarded 4s for furiten junchan tenpai. There were no 1s discarded yet, so at the time I thought I could still draw it from the wall (little did I know all the 1s are with the other players), and I can fold anytime.
Wwyd? Riichi? Skip chii for 7s tsumo? Even if you drew the 7s, would you still throw 4s to hunt for junchan? It's a rare yaku I probably would still throw the win for.
If you're curious about the ending, across lord kanned and gave me dora 3 then dealt into right lord with the same 1s I was looking for.