When you create an activity, you can associate it with an idol, a card, an event, etc. Then from the card/idol/event description, you can see all the activities related to it. For example: all the cosplays of this idol, all the card edits of this card, etc.
When you create an activity, you can associate it with an idol, a card, an event, etc. Then from the card/idol/event description, you can see all the activities related to it. For example: all the cosplays of this idol, all the card edits of this card, etc.