1. Sunday Current Performance Evaluation
Currently, Tribee is considered the best support in the meta, but Sunday specializes in summoner dealers and can perform at the level of a Tribee 1-star. Considering the future, there is a high probability that a dealer who works well with Sunday will appear. The current meta is set to favor Tribee, but if Saber or Finon are released as summoner dealers in version 3.4, Sunday's position may increase.
2. Should I pull for Sunday's rerun?
If you love Sunday or have enough resources, it is recommended to get at least one copy. Open the pickup window to see how many pulls you can do, and if you consider getting Sunday to full potential, you will need more than 300 pulls in total until Finon and Saber are released in version 3.3, so you should decide carefully. It may not be a good choice to give up the next Harmony character to pull for Sunday. You may consider Sunday's rerun if Sunday is essential for a specific dealer.
3. Essential vs. Replaceable
You need to determine whether Sunday is essential for a specific character or whether it can be replaced. If you have a lot of money, you can collect all the high-end parts, but most users have to compromise. If you skip Sunday, you may regret it later, but it is better to choose the one with a lower probability of regret compared to skipping the next Harmony character. Currently, Sunday is not irreplaceable except for summoner dealers like Aggr or Experience.
4. Conclusion
You need to check if Sunday has essential compatibility with Finon or Saber. If it is more advantageous to pull for a support before breaking through a dealer when pulling for a dealer, you can judge that the compatibility is high. If breaking through a dealer is more profitable than getting a support, you can judge that the compatibility is not good. It is expected that Sunday will be difficult to be irreplaceable for dealers without summons. The investment priority for new dealers will continue to be an issue in the future, and since new characters are given priority for treatment and parts, it is not cost-effective to skip new characters and pull for rerun parts. You should consider Sunday's rerun on the premise that you can pull the next Harmony after Sunday.