Hi ogura,
Yours excessive 7 Killings Star is due to your present decade luck cycle which has makes it strong due to the 3 harmony combination in your Earthly Branches. Perhaps I shall say that your 7 Killings Star is very strong rather than excessive since the combination has boosted the decade luck 7 Killings Star in the Heavenly Stem.
In your original chart you have only two 7 Killings Star and one Direct Officer Star hidden inside your Earthly Branches. As you know Direct Officer Star represents your spouse in term of people and in term of character it represent righteous and principled. As for the 7 Killings Star it represent your lovers or close opposite sex confidants and in term of character it represent ruthless and impulsive.
Therefore the roots of your chart show that there is a spouse star and close opposite sex confidant. The strength and appearance of this star will have to depend on your chart, decade and annual influence.
Overall you still need to look at the whole chart and influence to conclude the circumstances. Just like a sportsman needs strong 7 Killings Star to give them the killer instinct to win their opponent. As for your case your 7 Killings Star is presently too strong and in term of character it help to give you the aggressiveness in managing your company. In term of people the opposite sex may have an agenda toward getting near you. So there is no good or bad, right or wrong, everything is relative and it depends on what you want.
Bernard