Special Mention - Alice in Borderland S1 and S2. There aren't too much of friendships in S1, but S2 shows quite a bit of friendship blossoming. It's also really interesting to watch.
1. Be Reborn
2. Bitter Blood
3. Detective Samoyeds (the friendship is pretty fun in this one)
4. Dorokei
5. Under the Skin
6. Maybe Junkyouju Takatsuki Akira no Suisatsu (this one has friendship and mystery, but I'm not sure how you might feel about this one).
7. Kiwadoku Naritai Otoko
8. Midnight Runners
9. MIU 404
10. Oh no! here comes trouble!