noun
launch impression; presence; impact of a debut
Used in marketing and advertising to describe the impactful feeling or presence created when a new product, service, or character is introduced. Often refers to the visual or emotional punch of a launch.
新商品のCMは登場感が強く、消費者の記憶に残りやすい。
The commercial for the new product has a strong launch impression and is easy for consumers to remember.
このゲームのボスキャラは登場感がすごい。
The boss character in this game has an incredible presence when it appears.
存在感 means a general sense of presence or aura, not necessarily tied to a launch or first appearance.
Compound of 登場 (appearance, debut) and 感 (feeling, sense). The exact origin is uncertain, but it likely emerged in advertising and media contexts to describe the impact of a new introduction.