>>4256537/a/ will most likely not be worth asking as its a literal cesspool of a board and I'm not to sure about /u/ since I've never been, but try asking /wsr/. I've asked for specific recommendations there in the past and each time I've had someone help out - it may take 1-3 days or so depending on how the board is.
I don't consume manga so sadly I can't help you there. Maybe there is an anon lurking around here who could help out as well!
