愛コトバ-恋の名言・愛の格言- : [collected short love stories]
あいことば こい の めいげん あい の かくげん : これくてっど しょーと らゔ すとーりーず
est. Rough estimate based on volume count, reprints and magazine — not an official figure
External databases: MADB
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections