I'm but a Bindweed in a Garden of Morning Glories

When past tragedies start affecting Tsuki's work in Squad Two, she is suddenly transferred to Squad Six. She wonders why her ex-friend she hadn't seen in years (who is now captain and her superior) has recruited her. With him being so uptight and strict and her the kind who listens to her heart above all, will they be able to see eye to eye or will he expel her from his squad too?