//ORIGINAL DOCUMENT
//=================
    {
      "_id": "aramintha",
      "name": "Aramintha",
      "rarity": 5,
      "classType": "mage",
      "element": "fire",
      (...),//other properties
      "relations": [
        {
          "hero": "basar",
          "relationType": "trust"
        },
        {
          "hero": "rin",
          "relationType": "trust"
        },
        {
          "hero": "celeste",
          "relationType": "trust"
        },
        {
          "hero": "cartuja",
          "relationType": "trust"
        }
      ],
    }

//MY CURRENT AGGREGATE
//=================
    {
      "_id": "aramintha",
      "name": "Aramintha",
      "rarity": 5,
      "classType": "mage",
      "element": "fire",
      (...),//other properties
      "relations": [
        {
          "_id": "basar",
          "name": "Basar",
        },
        {
          "_id": "cartuja",
          "name": "Cartuja",
        },
        {
          "_id": "celeste",
          "name": "Celeste",
        },
        {
          "_id": "rin",
          "name": "Rin",
        }
      ],
    }

//ANTHONY'S AGGREGATE
//=================
    {
      "_id": "aramintha",
      "relations": [
        {
          "hero": "basar",
          "relationType": "trust",
          "name": "Basar"
        },
        {
          "hero": "rin",
          "relationType": "trust",
          "name": "Rin"
        },
        {
          "hero": "celeste",
          "relationType": "trust",
          "name": "Celeste"
        },
        {
          "hero": "cartuja",
          "relationType": "trust",
          "name": "Cartuja"
        }
      ],
      "name": "Aramintha"
    //other properties are now missing
    }