It would depend on your relationship with him. If you are a casual friend or a charge, a simple message would likely suffice.
If you are a close friend, however, I would recommend setting aside some time to send with him, also a small gift. It will need to be practical, though, he very much enjoys gifts that are useful. [He restrains the impulse to recommend potholders, but just barely.] Perhaps an accessory that protects against status effects, or a trinket thathold sentimental value. Nothing too flashy or gaudy, mind, he much prefers adornment that is simplistic and spartan.
[He has a small inkling of the relationship this person, whoever they (she) is, has with his brother. And you can't deny that he is a bit invested in his brother's happiness. Also, it will be good advice to those who are wondering the same thing.]
ANONYMOUS
If you are a close friend, however, I would recommend setting aside some time to send with him, also a small gift. It will need to be practical, though, he very much enjoys gifts that are useful. [He restrains the impulse to recommend potholders, but just barely.] Perhaps an accessory that protects against status effects, or a trinket thathold sentimental value. Nothing too flashy or gaudy, mind, he much prefers adornment that is simplistic and spartan.
[He has a small inkling of the relationship this person, whoever they (she) is, has with his brother. And you can't deny that he is a bit invested in his brother's happiness. Also, it will be good advice to those who are wondering the same thing.]