５件
How to write Japanese & Stroke order

Check also 件  

Names and idioms with total stroke of 6:
丈子  子之  七月  子山  牞  

Names and idioms similar to ５件:
怪物件  件船  構成要件  諸条件  済南事件  

Check stroke order for the words below:
小川原  自己辯護  あざ笑う  野暮ったい  美谷子  妙機  遊泳術  相煥