Lionel, a tactician who was expelled from the clan due to a tangle of relationships. When he visits the adventurer's guild in despair, he meets a beautiful trio of adventurers who are behind in the payment of the sponsorship fee.

Lionel can't stand the three of them, but he activates his innate love for taking care of them and ends up helping them. On top of that, he becomes attached to the three of them and decides to form a new clan... No wait, this might be a once-in-a-lifetime opportunity. Raise these talented kids, make a name for yourself, and give back to those who banished me! Tactician Lionel's new adventure begins now!