BROTHERS/ Sibling Relationships?

Suggest older dramas/movies about brothers or siblings having amazing relationships. I'd prefer brother-brother relationships with sad plots and tragic story haha but suggest anything that comes to mind :) New dramas are fine too but with strong sibling relationships only! 

I've watched Pinnochio, East of Eden, Giant ... Suggest the hidden gems if possible :)

• First Love (Korea 1994) -long angsty makjang drama 
• Feelings (Korea 1994) - light youth trendy drama
• Into the sunlight (Korea 1999) - this is probably a spoiler listing this drama here
• Stars Falling from the Sky (Korea 2010)
• Rinne No Ame (Japan 2010) - Drama special and a melodrama
• Ojakgyu Brothers (Korea 2011) - Family drama
• King 2 Heart (Korea 2012) - bromance bet, brothers is at the start only due to tragedy
• Triangle (Korea 2014) - almost same genre as Giant
• Better Man (Taiwan 2016) - family drama
• Circle (korea 2017) - mystery scifi
• Nirvana in Fire 2 (China 2017) - wuxia/historical
• Day and Night (China 2017) - thriller suspense drama
• My Mister (Korea 2018) - a generally sad, tragic melodrama, but the sibling part was fun 
• Ryu No Michi (Japan 2020) - revenge drama 
• Its okay not to be okay (Korea 2020)
• Non Blood related brothers - so they are adopted/step-brothers/ bestfriend-turned-brother/cousins)
  • Can You Hear My Heart (Korea 2011) - adoptive brothers
  • Ugly Alert (Korea 2013) - family melodrama about Step siblings
  • Nirvana in Fire (China 2015) - bestfriends/cousins/allies
  • Ouruburos (Japan 2015)
  • Tong: Memories (Korea 2016) - classmates/bestfriends
  • He is Psychometric (Korea 2019) - adoptive/foster brothers
• Siblings:
  • Liver or Die (Korea 2018)
  • Take My Brother Away (China 2018)
  • All is well (China 2019)
  • Le Coup de Foudre (China 2019)
•  Movies
  • Tae Guk Ki (Korea)
  • My Annoying Brother (Korea)
  • Keys to the Heart (Korea)
  • Over Drive (Japan)

PS; in BOLD  are the dramas with a very sad, melodramatic narrative you might like