Nippon-ichi no Otoko no Tamashii / The Soul of the Best Guy in Japan

"Nippon-ichi no Otoko no Tamashii" - this is an ecchi comedy similar to Colorful consisting of 12 short episodes. This anime series is a transitional work where explicit nudity flows into panty fetish and presents a small set of stories on this theme. As in "Colorful", it's not so much funny as it is educational and Japanese-style. And most jokes will probably be appreciated only by real Japanese or fierce fans of the original author Kikuni Masahiko. 

The series itself consists of two full seasons of 12 episodes each and belongs to the usual erotic anime comedies. Therefore, this series is available in the "Fanservice" section.