|style="text-align:center;"|[[Zero Fighter Type 21 (Skilled)]]
|style="text-align:center;"|[[Zero Fighter Type 21 (Skilled)]]
−
|style="text-align:center;"|[[Zero Fighter Type 32 (Skilled)]] ★+3<br>Can also be upgraded directly to [[Zero Fighter Type 52 (Skilled)]] via a [[Quests#F25|monthly quest]].
+
|style="text-align:center;"|[[Zero Fighter Type 32 (Skilled)]] ★+3<br>Can also be upgraded directly to [[Zero Fighter Type 52 (Skilled)]] via a [[Quests#F25|monthly quest]]. Any improvements (★) will be carried over to the new model.