Okay, so as we can see in the wiki of metal_gear_solid it's aliased to metal_gear, and implies konami.
However, the main tag, metal_gear, does not have the konami implication.
The result is, if you tag something with metal_gear_solid it becomes metal_gear and adds konami. However, if you tag it with metal_gear itself, it does not add konami to tags.
Therefore, i suggest moving the implication from
metal_gear_solid -> komani
to
metal_gear -> konami
cheers
Updated by user 59725