A dark metal staircase supplies the lines and framing in Nao Usami’s Gap Between The Stairs, the second of five installments in First Gravure’s Two Tone collection. The official promotional preview places her in black swimwear and an open-mesh top against pale walls, with the camera looking upward along the steps and landing rail.
Nao Usami’s Two Tone Part 2 preview frames the staircase
Gap Between The Stairs pairs black mesh styling with low-angle compositions. The 30-second teaser accompanies a 13-minute video directed by Ruby.
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The preview
Watch the official teaser
Watch the official preview
Talent in this story
Nao Usami
宇佐美なお
Nao Usami (宇佐美なお) works across gravure, motorsport, combat-sports events and horror performance. She served as a GAINER sucre race queen in SUPER GT in 2020 and later appeared as a K-1 GIRL and RIZIN Girl.
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Official promotional preview: approximately 30 seconds. Video and preview-frame credit: First Gravure / Eye Factory Co., Ltd. The featured still comes from this preview; it is not cover artwork.
The preview’s staircase compositions alternate between seated views on the steps and standing portraits behind the railing. Horizontal bars cross the foreground, while the stair edges form diagonals around Usami. The open mesh adds another repeating pattern against the otherwise plain interior; a black miniskirt appears in some shots.
These observations concern the promotional sample, not a review of the complete video. First Gravure lists the full installment at 13 minutes, with Ruby credited as director and a release date of April 10, 2026.
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Release details
Source
First Gravure’s official product listing, with the official Eye Factory promotional preview.