Greg Extreme Nagisa Solo DPS

Just borrow a maxed Nagisa and follow the timings.
Recommend using your most invested tanks, preferably Tsubaki, Hoshino, or Reisa as they have a basic skill that heals them automatically.
Also recommend using Serina instead of M Yuzu. I used M Yuzu with almost no investments, so a weaker tank with a decently invested Serina should work (her basic skill automatically heals).
Feel free to spam Serina ex in phase 2 as with how fast the skill bar is recharging Nagisa wouldn’t be able to use it up anyways.
Investments:
Hoshino: UE30, 47M4, t7t7t6
Nagisa: UE50, MMMM, t8t8t8
M Yuzu: 3 stars, no other investment