Replace the Enhanced Orb with Two Pronged and we're talking a worthwhile Blue Attacker team. Sorta.
Well either that or row. Considering her possible subs: Awoken Neptune, Shinji, Unit 13 and Zeus Mercury (All of them have row awakenings).
She does have a HP threshold to worry about. Though assuming she can get her delay up and there's no status shield, she may not have as big a problem (take the turn to heal back to full).
You're pretty slow!Rensouhou-chan, let's go together.Shimakaze-class First Ship, Destroyer Shimakaze4x ATK for Water Att. when HP is full.Leader SkillGreatly delays enemies' next attackSkillAttacker