Determining who is "very caring" in BTS is subjective, but based on available information, all the members demonstrate caring qualities. While Jimin or J-Hope are often highlighted as being particularly sweet, the reference suggests that all members are genuinely caring towards each other and their fans (14-Oct-2018).
Therefore, instead of singling out one member, it's more accurate to say that a strong sense of care and consideration is present throughout the group.
