本 ホン もと book; present; main; origin; true; real; counter for long cylindrical things Grade Level 1 5 Strokes ➥
一本化 いっぽんか unification; centralization; integration; drawing things together; working out a common policy; consolidation n vs Advanced ➥
エロ本 エロほん pornographic photo book; erotic photo book; pornographic comic book; hentai comic book n Advanced ➥