Tsuki Hyouka's manga / #misunderstood(3)

I'm curious but I want to wait until it's complete if possible. SPOILERS about the ending of the novel : - "The duke is the main lead but not her love interest, in the end she make the duke fall in love with her and commit suicide, only for the duke to suffer. It was bittersweet ending but I like it." - " I don't know if it's true so she love and hated the ml. Her extreme hatred and mental pressure cuz her death. She told the ml to never look for her in their next life. Time passed by the ml lived a lonely life, became a old man and died of old age but he returned back to time somehow and met the fl as a child. That's how this ends."

I loved the main characters, they were cute together. But dang, how I wished that they would leave this company together! "The side characters just sucked big time... Like the sister biatch who two timed with the uke??? And that sister being made out to be the victim somehow????? Like, having a parting shot of putting the blame on the guy because he wasn't assertive enough in a relationship??????"