The bulk update request #8672 has been approved by @evazion.
create implication holding_nunchaku -> nunchaku
create implication holding_nunchaku -> holding_weapon
Bit more uncommon weapon but given that this tag already exist and has been around for like 2 years it probably would be wise to give it similar implication statuses as other holding_weapon tags. Or given how it ain't all that common just manually changing all cases of it to holding_weapon+nunchaku.