Here's the picture of vol no.1 of the manga, back and front!

Here are some infos about the manga Vol 1 to 4

Volume 1: Chapters: 1-5 + Ganbare Tanaka-Kun! extra
ISBN: 4-04-853203-0
First printed: 6/1/2000
Publisher: Asuka Comics DX (Kadokawa)
Cover: Front: Himeno and chibi-Leafe Knights Back: Himeno and all Leafe Knights [ You can see at the top^]

Volume 2: Chapters: 6-10 + atogaki and Ganbare Tanaka-kun! (continued)
ISBN: 4-04-853329-0
First printed: 3/1/2001
Publisher: Asuka Comics DX (Kadokawa)
Cover: Front: Himeno as White Pretear, Hayate Back: The other Leafe Knights

Volume 3: Chapters: 11-13 + Anime Talk
ISBN: 4-04-853342-8 First printed: 3/29/2001
Publisher: Asuka Comics DX (Kadokawa)
Cover: Front: Himeno and Sasame Back: The rest of the Leafe Knights

Volume 4: Chapters: 14/18 + epilogue (END)
ISBN: 4-04-853392-4 First printed: 7/21/2001
Publisher: Asuka Comics DX (Kadokawa)
Cover: Front: Himeno as White Pretear, Hayate Back: The other Leafe Knights