勢運 is read as せいうん (seiun) and means trend.
せいうん
seiun
うんせい
fortune
うんせいはんだん
fortune-telling
うんせいりゅうりゅう
one's prosperity being on the rise
いきおい
naturally
せいりょく
influence
せいりょくぶんや
the respective (relative) strength of political parties
せいりょくかに
under the influence of
せいりょくか
man of influence
せご
beater (on a hunt)
せいりょくかんけい
power relations
せいか
influential family
せい
energy