DESIGN BRIEF: The brief was a classical wetland pair without Bharni shouting over the water. Kachni fits because cranes in Darbhanga monsoon scenes were always line-first — parallel hatch on the breast, stipple on the wing coverts, reed rhythm built from vertical strokes rather than flat blue blocks. Twin-panel-mirror solves the fidelity problem: sarus cranes mate for life and face each other in ritual folk panels; a single centred bird would read decorative, but mirrored panels with a chevron divider give the pair bond a formal grammar the way Kohbar walls split auspicious motifs across a vertical seam. We kept colour sparse — ochre and indigo only where the border squares and water bands need legibility — so the black hatch density carries the wetland atmosphere. Fish swim inward from each panel toward the divider like Aripana offerings; lotus and lily pads anchor the lower register in classical auspicious vocabulary. Corner branch birds scale the composition upward without breaking the mirror contract.