DEEP WelterWeight Champion and a Samboist Hidehiko Hasegawa (SK
Absolute) mentioned on his blog that he might be fight in the event of June. Since he said just "My next fight seems to be in June", it is not clear whether it would be a title match or not. He is also a member of Nippon Top Team(NTT), lead by Shinya Aoki.

Looking at the fighters around DEEP WelterWeight (under 76kg), a Korean fighter Dong Hyun Kim is one of the best fighters other than the champion. Since he has really good punches and ground techniques
I personally expect Kim would be Hasegawa's next opponent of the title match. On the other hand it is rumored that Kim will fight at PRIDE LWGP which is supposed to start on July 16th in Nagoya.