The classic system of the affinity study in astrology has been the comparison of two birth charts. After the years 
in the twentieth century, new systems such as the composite chart and others have been studied newly. One of 
the sample cases of 
classic birth charts comparison is illustrated in the above right. John M. Addey (1920 – 1982) born 
in England and Japanese astrologer or this author in green color will be a typical example case. The Sun of 
this author is tenanted in the eighth house or the death house of Addey by forming a grand trine

 in tight orbs 
with the Sun and Mars of Addey found. Such indication will suggest the following events as follows; 
in 1978, Addey has written the preface note of the first book of this author published at my own expense; 
since that moment until the death of Addey he wrote many letters to me as you will find in the copy 
illustrated in the upper left side; thus this author has studied the second harmonics with the advises of Addey 
as the study of second harmonics was abandoned by Addey previously; after the past away of Addey, this author 
has newly developed 
the Divisional Harmonics of Ishikawa and it was published by American Federation of 
Astrologers, Incorporated or AFA in 1984 released. 

Venus and the newly observed body of CIRON 

 of this author are tenanted in the ninth house of Addey that 
jointly form a trine aspect with the Ascendant of Addey. As the ninth house indicates the future research activities, 
and as the new body CHIRON indicates the astrological study, the author’s astrological works will give a 
favorable result on the works of Addey in the future expected. This indication will be enhanced further as the 
MC of this author is tenanted in the fifth house or the creativity of a person that forms a grand trine with 
the ASC of Addey found. With regard to an indication of simple degree notation, please refer to the 
significant figures in this text released.