Daigo has certainly made quite a name for himself in the Ruby Underground. Almost everyone knows his face by now and in the rare good way and not the 'this person is totally mugging material' way. He's done well in keeping things orderly and putting a couple of the more unruly, younger folks in line to the appreciation of the Crime Families.
Sumire Hasumichi can vouch for Daigo's ability to mediate (and kick ass) should be need it. Since he will be a neutral party, however, she will not do more than that to not show any obvious bias. After all, a conflict of interests would be in poor taste and despite her stance on Gembonded she does have a certain reputation to maintain in the Underground.
He will be coming in at a good time, actually, as things seem to be growing especially restless in the Ruby Underground this month. There's been whispers of a 'new player' coming into the scene unexpectedly and stirring up trouble. It's put a couple of the Crime Families on edge and pointing fingers at each other. Tensions only seem to be gradually rising as time ticks on.
Hopefully, they'll simmer down but even Red will note that this feels different than their usual squabbles. Whoever is behind the scenes knows what they're doing to raise hackles and get them at each other's throats. At least Daigo's mediation efforts will help in keeping Gembonded (mostly) out of harm's way should things take a turn for the worse.
SETTING ENGAGEMENT