Both are an RNG-based military strategy game with same gameplay elements but a different setting:
KanColle - WW2 ships as girls fighting an abyssal organization bent on world domination
TouRabu - Feudal Japanese swords as boys fighting a retrograde force aimed on altering history, and sometimes a mysterious force that doesn't want any interference in the space-time continuum
Both are published by DMM.com, but have different developers - Kadokawa Games for KanColle, while Nitroplus for TouRabu.

Kantai Collection

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