…振り => After (a long time) N2
Time
…振り => Way, condition, situation, appearance N2
Situation
~ふり(~振り)      => to pretend; to act as if N3
ねばならない/ねばならぬ/ねば => have to do; must; should ~ N2
ね => isn't it? right? eh? N5
じゃありません => not to be N5
Emphasize negative meaning
かねない => Afraid that N2
Potential, Possibility
ね => Requests confirmation from the listener N5
Particles
かねる => unable to do something; can’t do something N2
ねばならない => Must A N2
Needs, Requirements
じゃありませんでした => was not, were not N5
Emphasize negative meaning
かねない => (someone) might do something; something might happen N2