Jiro and Ikami Maeda wrote:

Mind if I joined in?
Ranma 1/2
Nabiki Tendo
"On the Value of Human dignity"
Tatewaki Kuno
"Why Shakespeare is bad for you"
(co authored with Mikado Sanzenin)
"How to stick to one woman"
Akane Tendo
"101 Gourmet Dishes"
Ranma Saotome
"The Art of Speaking"
"100 ways to avoid getting into trouble"
Mikado Sanzenin (co authored with Happosai)
"I hate Girls"
Cologne
"Why Conservatism is bad for you"
Shampoo
"Nihonggo made easy"
Ukyo Kuonji
"1000 ways to forget your past love"
Ryouga Hibiki
"Pigging out: 10000 ways to cook meatloaf"

Another few for Hibiki, Ryouga    "1001 Ways To Prepare Ham"
    "Gourmet Pork Dishes and How to Prepare them"
    "Bacon: A Delicious Sidedish to Any Meal"

Project A-ko
 A-ko
"Straight A student- how you can be one too"
C-ko
"Child Psychology and it's relations to modern day relationships"

    "100 Delicious Goumet Treats And How to Make Them"    "Cooking Made
Easy"

B-ko
"The Gentle Boss"

    "Temperance & Restraint: A Guide to Self Practice"

Neon Genesis Evangelion
Ikari Shinji and Ayanami Rei
"I am special, so are you : A guidebook on self importance"
Asuka (co authored with Akane Tendo
"Violence :How it can ruin a relationship"