「HBD SOFI !」は FontVibe AI で作成したアニメの文字エフェクトです。少年マンガのタイトル文字。手描きの太い黒フチ、ハイライトと影をくっきり分けたセルシェーディング、勢いよく傾いた文字と、白地に放射状の集中線。

rendered as Japanese shounen anime title treatment — bold hand-inked manga lettering with authentic cel-shaded visual energy. Letter construction follows classic Shonen Jump title card standards: thick black ink outline with natural brush-weight variation defining each letter boundary; flat cel-shading fill with three hard-edge zones — bright highlight zone on upper letter face, highly saturated primary color zone at center, deep shadow zone at lower edge; all zone boundaries knife-edge hard, zero gradient blur, pure flat offset-print ink physics. Energy signature: high-contrast color + thick ink outline = letters that look physically printed on manga paper. The typographic language of Dragon Ball, Naruto, One Piece, Demon Slayer, Jujutsu Kaisen title cards — maximum manga kinetic energy, iconic and immediately recognizable as Japanese anime title typography. LETTERFORM PRIORITY: when the chosen font carries its own treatment, that font's letterform shapes take priority and own the letters; this style governs the inked manga outline, the three-zone cel-shading and the kinetic energy. FALLBACK MATERIAL: if the font carries no material of its own, render the letters as bold hand-inked shounen title lettering with a thick black brush outline and hard three-zone cel-shading. COLOR PRIORITY: keep the font's own colors if specified; otherwise a high-saturation primary fill with hard highlight and shadow zones. "HBD SOFI !" as a shounen anime birthday title card, with the full phrase treated as the dominant celebratory lettering and generous rhythmic spacing around the exclamation mark. Every character carries a thick black brush-ink contour with irregular hand-drawn weight, crisp flat cel-shading in three knife-edge zones: pale lemon-white highlights across upper faces, saturated hot pink and coral-red midtone panels, deep magenta lower shadow panels; zero airbrush gradients. A burst of manga party effects surrounds the text: radial black-and-white speed lines, jagged starburst impact marks, small cel-shaded confetti rectangles, curled paper streamers, sparkling four-point ink stars, and comic halftone dot clusters. Behind the lettering, a bright cyan radial burst breaks through a warm yellow offset-print paper field, with rough ink speckle and subtle screen-print registration texture. Add a small frosted birthday cake silhouette in the background with candle flames rendered as sharp yellow-orange cel-shaded shapes, partially obscured by the impact burst. High-contrast Shonen Jump chapter-cover energy, clean readable title edges, flat printed ink physics, hard shadow shapes, no photorealism, no soft blur, crisp anime key visual, 8k graphic render.