General 

```mermaid
flowchart TD

  subgraph Player Interaction
    A1[Misskey bot]
    A2[Web]
  end

  subgraph Misskey
    B1[Misskey instance]
  end

  subgraph Bot
    C1[Bot core in Python]
    C2[Notification parser]
    C3[Gacha roll logic]
    C4[Database interface]
    C5[Misskey API poster]
  end

  subgraph Website
    D1[Flask backend]
    D2[User account system]
    D3[Image gallery]
  end

  subgraph Backend
    E1[Shared database]
    E2[Virtual environment]
    E3[Debian Linux server]
  end

  A1 <-->|Send or receive mention| B1
  B1 -->|Send mention| C2
  C2 -->|Command and information| C3
  C3 <-->|Ask for command information and confirmed roll setting| C4
  C4 <--> E1
  C3 -->|Command result and info| C5
  C5 -->|Resulting Mention| B1

  A2 --> D1
  D1 --> D2
  D1 --> D3
  D2 --> E1
  D3 --> E1

  C1 --> E2
  D1 --> E2

  E1 --> E3
  B1 --> E3

```