170425 UndergroundEvent7

170425 eventosakabanner

Underground Treasure Chest (地下に眠る千両箱) involves exploring the vast area beneath Osaka Castle and collecting Koban. To enter, select the event banner from the sortie page.

Event Period: 25 April 2017 (Tue) 17:00 until 9 May 2017 (Tue) 14:00 Japan Standard Time.

May 9 2017 14:00 +0900 until event's over!

Related events:

How to Play Edit

  • This event is to investigate the mysterious dimension under the Osaka Castle and collect koban.
  • The event is accessible via the event banner in the Front Lines.
  • This event has underground floors from 1 to 50. You can collect Koban by clearing the boss node on each floor, and by stepping on normal map nodes.
  • Event missions are available which will award rewards for completion.
  • Remodels:
    • It is now possible to repeat floors that have been cleared once.
    • When you repeat the floors and clear the boss node, you can choose the "Continue Investigation" button to repeat the same floor, or "Return to Citadel" to return.
    • Entering any floors will deduct 20 fatigue from each sword in your team. Repeating a floor will only deduct 10 fatigue.
  • In rare instances, Hakata Toushirou, Gotou Toushirou, Shinano Toushirou, and Houchou Toushirou will drop from the boss nodes on specific floors.

Notes Edit

170425 utc7 hakata bonus
  • There is no level limit for experience gain.
  • Kebiishi will not appear.
  • All clear rewards will be sent directly to your inbox. Please be mindful of the expiry date.
  • If you return to the citadel in the middle of a map, you will restart from the beginning of that floor.
  • Having Hakata Toushirou on your team will increase koban by 1.5x, Hakata Toushirou (Kiwame) by 2x. Any koban rewards received because of Hakata will be in green text.
  • Clearing 50 floors will grant you a small gift.

Tips Edit

  • After defeating the boss on each floor, you will automatically proceed to the next floor.
    • Troop count is restored at the end of each floor, as if one had returned to the citadel at the end of a map.
    • Enemy strength and floor difficulty increase every 10 floors.
  • Swords accumulate fatigue as they progress through floors.
    • Since you cannot confirm fatigue levels during sortie, it is recommended to return to citadel at regular intervals to monitor fatigue.
  • All floors within the event are normal day maps. Ootachi and Naginata have an advantage, however putting Tantou in your team will slightly increase the chances of stepping on resource nodes.

Missions Edit

Rewards Edit

The following rewards are given for clearing each floor of the Underground Treasure Chest map.

Floor Reward Item   Floor Reward Item
Floor 1 Koban x300 Floor 26 Koban x400
Floor 2 Koban x300 Floor 27 Koban x400
Floor 3 Koban x300
Request Token x1
Floor 28 Koban x400
Request Token x1
Floor 4 Koban x300 Floor 29 Koban x400
Floor 5 Koban x300
Sennin Dango x1
Floor 30 Koban x5000
Archer (Gold) x1
Floor 6 Koban x320 Floor 31 Koban x420
Floor 7 Koban x320 Floor 32 Koban x420
Floor 8 Koban x320
Request Token x1
Floor 33 Koban x420
Request Token x1
Floor 9 Koban x320 Floor 34 Koban x420
Floor 10 Koban x320
Light Infantry (Gold) x1
Floor 35 Koban x420
Catapult (Gold) x1
Floor 11 Koban x340 Floor 36 Koban x440
Floor 12 Koban x340 Floor 37 Koban x440
Floor 13 Koban x340
Request Token x1
Floor 38 Koban x440
Help Token x1
Floor 14 Koban x340 Floor 39 Koban x440
Floor 15 Koban x340
Light Cavalry (Gold) x1
Floor 40 Koban x5000
Request Token x1
Floor 16 Koban x360 Floor 41 Koban x460
Floor 17 Koban x360 Floor 42 Koban x460
Floor 18 Koban x360
Request Token x1
Floor 43 Koban x460
Plum Ofuda x1
Floor 19 Koban x360 Floor 44 Koban x460
Floor 20 Koban x360
Heavy Infantry (Gold) x1
Floor 45 Koban x460
Musketeers (Gold) x1
Floor 21 Koban x380 Floor 46 Koban x480
Floor 22 Koban x380 Floor 47 Koban x480
Floor 23 Koban x380
Help Token x1
Floor 48 Koban x480
Request Token x1
Floor 24 Koban x380 Floor 49 Koban x480
Floor 25 Koban x380
Heavy Cavalry (Gold) x1
Floor 50 Koban x10000
Background x2


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