In an act of defiance that felt short of being a show of strength, disgruntled JD(U) leader Upendra Kushwaha held a brainstorming session here on Sunday, ostensibly to discuss the challenges faced by the party controlled by Bihar Chief Minister Nitish Kumar. Barring dissident MLC Rameshwar Mahto, who has an axe to grind against some ministers close to the CM, legislators and office bearers of the party chose to give the session a wide berth.