Why?

I think the blonde guy liked her but his family took advantage to it n asked him to betray her n kill her by imposing her as a witch so that they wouldn't get into a war situation with the fl family when he killed her ┑(￣Д ￣)┍

Yeah, and it just doesn't make sense. Especially when he said he love her but kill her. Like wtf, how are you gonna love her when she dead.

Mmm maybe I think it’s more like he chose to save his country and the people by killing his “lover”. He chose justice over love and his punishment (given to himself) is that he never forgets the guilt and can never loves again because he doesn’t deserve it.

It’s kinda like that saying, the hero would burn his love to save the world but the villian would burn the world to save his love.

It’s a moral grey theme and personality trait. So although I love our little FL and would protect her with all my might I don’t particularly hate squib (I don’t like him either but)…. Mmm more like I can understand and empathise with what he did.

Nah fuck him she didn't deserve to die just to justify his reason like no judgment but he definitely had other choices that did not involve her dying.
Love the saying! I would choose the Villain any day! ε=ε=(ノ≧∇≦)ノ

Yea lol of course she didn’t deserve to die. But at least with her death she now has chance to grow as a person, become courageous, help others (with her own choice) and get the love she freaking deserves. (/TДT)/

Side note: I really love the main ML. Because if he were in the shoes of the first lover he wouldn’t have taken the villian or the hero way. He would have had a freaking discussion with her. He would have shown her/us the consequences of the war and of her potential sacrifice and would have also talked about what else they could do. And from hearing what she has to say they would’ve made their decision for the next step ヽ(`Д´)ﾉ .

Ugh if only the ml was her first lover instead!!!!
(╯°Д °)╯╧╧