Hasegawa only directed two films,The Man Who Stole the Sun and The Youth Killer which is well worth watching too,and was released through
ATG, any films related to ATG are pretty well recommended,Akio Jissoji's Mujo:This Transient Life being one of my favourites,which is part of a trilogy of films incl:Mandala and Uta.There's not really any films like TMWSTS it's unique,but I'll give it a think...