xxxHOLIC
This manga had a huge impact on shaping my sense of self as a child. as an adult I'm really able to appreciate it. it's a truly bittersweet series - poignant in all the right ways. It's ultimately a show about human desires and human connection, moving on and letting go. must read in my opinion
MADK
i enjoy the main duo and how they aren't a couple or meant to have a healthy relationship, they just want to torment each other lol
One Room Angel
I think it's a bit beside the point to debate whether the relationship is problematic or not viewing it through a purely romantic lens. I choose to see it more as a story of two fractured people finding true joy and peace in each other (like platonic soulmates I guess), especially since you never see them do anything like kissing and whatnot. It's a heartbreaking story about human connection and love - what makes life worth it is the bond we can share with another person. Two other short manga which reminds me of this one is "white paper notebook" (less sad) and "my broken mariko" (more sad).
xxxHOLiC Rei