Happy Mania, Volume 1 (Happy Mania #1-4)

Shigeta is an attractive and "physically active" female looking for her soulmate in all the wrong places. In this day and age, love is a game people play to gain an advantage over others. Sincerity and honesty are often thrown by the wayside in an effort to get to the top. However, there are those - like Shigeta - who still look for true love in spite of it all.