It's A! Smile World!! (いっつあ！すまいるわーるど！！) is Hello, Happy World!'s second mini-album. It will be released on September 24, 2025.[1]
Track Listing[]
Disc 1 (CD)[]
| No. | Title | Music | Arrangement | Length |
|---|---|---|---|---|
| 1. | "Let's Smile Strea~ming♪" (れっつ・スマイル・すとり〜みんぐっ♪) | Takeda Yusuke | Takeda Yusuke | |
| 2. | "Yahoo! Ippo! Wonderful!" (やっほー！いっぽ！わんだふぉー！) | Kondo Seima | Kondo Seima | |
| 3. | "TBA" | |||
| 4. | "High Five／＼Believers☆" (ハイタッチ／＼びりーばーず☆) | Kasai Yuta | Kasai Yuta | |
| 5. | "Listen to Smile!" | Fujima Hitoshi | Fujima Hitoshi | 4:04 |