12487 already runs as over night run.
NFR/ECR should introduce a Rajya rani or Superfast IC between PNBE-Jogbani, which shud start from Patna early morning and reach Patna late night.. It wl always be full, considering there are number of long distance trains arriving PNBE early morning, there is no early morning train connection between PNBE-NNA-KIR-PRNA-JBN. So this new route will certainly help.