From Tokyopop:
Kohamaru comes from a peculiar family—each member can switch bodies with his or her soul mate! His parents can switch bodies, and his sister, oddly enough, can switch with her cat! Now it's Kohamaru's turn...
When Kohamaru literally runs into Nanao, the girl of his dreams, they switch bodies. True love, right? Well, unfortunately, she's in love with someone else. And if that weren't bad enough, the "someone else" turns out to be Kohamaru's twin brother Konatsu...who can reverse their transformation with his own kiss!
Volume 7 : Wizard and Magician1. Kawahori the Word Man by D. Kissan*2. Night bird by Kouzuki Reo3. Mushroom and Kappa - Magic Users’ Chapter by Magami Guriko*4. Good Day For Me by Omote Sora*5. Love Coloured Glasses by Bikke*6. The Kind Black Witch by Ueda Shinshuu7. The Magician and I by Mikawa Verno*8. Kokonoe Kyuujutsu by Aoto Takane*9. Forest’s Poison by Kumeta Natsuo10. The Witch and I by Saeki Yashiro*11. Kashoku by Kayase Shiki12. Magical Girl Alice and Her Brother by Igarashi Ran13. Magic! by Mizuhara Kenta*14. The Kind Magician and the Paper Bag Girl by MIZUTANI Yuzu & KAEDE Tohru15. Secret Service by Suzuki Ichiko* indicates oneshot being scanlated.
Volume 4 : Vampire*1. Sleeping Vampire by Kinoshita Sakura*2. Mushroom and Kappa: Arcana compilation for vampires on business trips by Magami Guriko*3. Crossing the River by Kouga Yun*4. A Shower in the sunshine by Omote Sora5. Urban Vampire by Bikke*6. Sky Burial by Takayama Shinobu7. Today's Dining Table by Saeki Yashiro*8. The Aegis of the Coffin of Time by Yugyoji Tama*9. Forest of Nobility by Kayase Shiki*10. Chiyo-sama! by Shindo Arashi11. Strigoi Kingdom by Serikawa Mame*12. The Catharsis of Truth by Inui Miku13. Blood Donation Advice by Igarashi Ran14. The Novice Vampire by Amamiya Azusa*15. A Gentle Temperature by Kisaragi Yoshinori* indicates oneshot being scanlated.