「J」は FontVibe AI で作成したネオンサインの文字エフェクトです。クラシックなロードサイドのネオンサイン。暗いレンガの壁で温かなピンクと琥珀色に光るガラス管に取り付け金具、濡れた路面への映り込み。

Create a deliberately minimal, square nighttime sign image. Show exactly one uppercase letter, "J", with no other lettering. Center it as the sole focal point, large and unmistakable, occupying about 45% of the canvas width and 65% of its height. Form the J as a smooth, continuous white glass neon tube, with a clean, bold monoline shape, a broad curved hook, and a short flat upper terminal. The tube itself stays white: a near-pure white core with a bright, soft white bloom and slight overexposure that gently softens fine tube detail. Add only tiny white diffraction glints at the brightest bends. Mount the sign visibly to a dark painted metal plate fixed to a nighttime charcoal-red brick wall, with small brackets and corner bolts. Rain sheen catches the sign’s light; restrained soft pink and amber reflections fall on the wet brick and faintly onto dark pavement below, but do not tint the J or its glow. Keep the wall and setting subdued so the white letter reads instantly. Physical roadside neon, atmospheric darkness, crisp letter silhouette, ample dark breathing room, no extra symbols, no border, no additional text.