BUR #18128 has been approved by @nonamethanks.
create implication mario_&_luigi:_dream_team -> mario_&_luigi_rpg
create implication mario_&_luigi:_paper_jam -> mario_&_luigi_rpg
create implication mario_&_luigi:_bowser's_inside_story -> mario_&_luigi_rpg
create implication mario_&_luigi:_partners_in_time -> mario_&_luigi_rpg
They are a subseries