Battle Rank Notice

"" is the name of three NaN Letters in.

Location and Uses
"ST:" NaN Letters are obtained by playing the multiplayer ST: and accumulating enough points to raise ST:'s battle rank. After climbing four battle ranks from "H" to "D", ST: can return to the main quest and visit any ST:, where the ST: will deliver a congratulatory ST: from the ST:, along with a random ST:. Two further "ST:" NaN Letters will be delivered after ST: climbs three more battle ranks to "A", then two more ranks to "&#9733;&#9733;". The included ST: increases in rarity each time.

Though ST:'s battle rank may increase once more to "&#9733;&#9733;&#9733;", no ST: is received for achieving this rank.