Nagase San has been a pgRouting contributor since before 2013, he has made valuable contributions to pgRouitng. osm2pgrouting, and the pgRoutingLayer plugin.
He has been actively participating on the monthly pgRouting PSC meetings, and give valuable insights.
You can see his OSGeo profile
For those reasons I propose the folowing:
MOTION: make Nagase San be part of the pgRouting PSC