Underground Treasure Chest 8



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 July 2017 (Tue) 18:00 until 8 Aug 2017 (Tue) 14:00 Japan Standard Time.

Related events:
 * Other Underground Treasure Chest events

How to Play

 * 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.
 * 10th Floor - Hakata Toushirou
 * 20th Floor - Gotou Toushirou
 * 30th Floor - Shinano Toushirou
 * 40th Floor - Houchou Toushirou
 * 50th Floor - Hakata Toushirou, Gotou Toushirou, Shinano Toushirou, and Houchou Toushirou

Tips

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

Floors
Underground Treasure Chest 8/Floor 1 - 15|Floor 1 - 15 Underground Treasure Chest 8/Floor 16 - 30|Floor 16 - 30 Underground Treasure Chest 8/Floor 31 - 45|Floor 31 - 45 Underground Treasure Chest 8/Floor 46 - 50|Floor 46 - 50
 * Floor 1 - 15
 * Floor 16 - 30
 * Floor 31 - 45
 * Floor 46 - 50