1st episode: 2001 April LaLa
catch copy: Mysterious flower hunter / Mysterious flower romance
2nd episode: 2001 May LaLa
3rd episode (Last episode): 2001 June LaLa
All these are not contained to tankobon or bunkobon.
To read it, we should buy the magazine sold ten years ago.
Hana Oi Bito means "Person(or people) who runs after flower".