Tairitsu (Summer) is a partner in Arcaea. She was obtainable from August 31st, 2018 to September 7th, 2018 along with Hikari (Summer) to celebrate the end of summer. She was made available again from August 3rd, 2019 to August 10th, 2019.



Main Article: Tairitsu § Name


While Tairitsu wears the same hair bows as in her regular outfit, the rest of her clothing is different. Her dress is long and black with loose straps and a darker black frill around the top; the lower half is plain but seemingly full. A black ribbon is tied around her waist with the bow behind her. She also wears a pair of long black gloves that extend past her elbows, as well as black shoes with ribbons tied around her lower legs.

Stats by Level

LEVEL 1 2 3 4 5 6 7 8 9 10
FRAG 61 61 61 61 62 63 65 67 70 74
STEP 44 44 44 44 45 46 47 48 50 53
LEVEL 11 12 13 14 15 16 17 18 19 20
FRAG 79 82 85 88 89 90 91 91 91 92
STEP 56 59 61 63 64 65 65 65 65 66


Tairitsu (Summer) puts a heavy emphasis on FRAG but loses 2 overall stats compared to her regular Tairitsu form (158 < 160). She is effectively a slightly worse Kou but a better Luna overall, but comes slightly ahead from both in terms of FRAG stat.

  • Her maximum FRAG stat translate to 1.84x fragment multiplier.
  • Her maximum STEP stat translate to 1.32x step multiplier for world mode.

Prior to Pandora Nemesis (MTA-XXX), Tairitsu (Summer) has the highest FRAG stat of all partners. However, she only leads it by 0.04x and therefore doesn't make a huge difference in the long run. This is also compounded by the fact that you have to play her with MIRROR on and you may need to relearn charts. However, as discussed in Lethe's Notes, this can be used to help players having problems with certain sections that are dominant to a specific hand or break an already built up muscle memory to keep players independent of muscle memory.


  • Tairitsu (Summer) has the fourth highest FRAG stat of all the partners after Pandora Nemesis (MTA-XXX) at level 30 (105 FRAG), Kou at level 30 (100 FRAG), and Kanae at level 20 (95 FRAG).


This section is a stub. You can help by contributing information to it.
Starting Partners HikariTairitsu
Story Partners Tairitsu (Axium)Tairitsu (Grievous Lady)Hikari (Zero)Hikari (Fracture)
Side Story Partners KouLetheEtoLunaSayaKanae
Collaboration Partners SapphireStellaHikari & FisicaTairitsu & TrinHikari & SeineTairitsu (Grievous Lady) & Chuni Penguin
Soundtrack Partners Hikari (Fantasia)Tairitsu (Sonata)
Limited-Time Partners IlithShirabeHikari (Summer)Tairitsu (Summer)AyuEto & LunaYumeNono ShibusawaHaruna MishimaRegulus (MDA-21)Pandora Nemesis (MTA-XXX)Chuni PenguinSiaDORO*C
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