I'd say them working together to send these, makes the most sense.

[ he nods ]

Strange, how both of the arrangements you've received seem to convey a sense of hope and love, Tsurumaru's is also a positive message, but Mikazuki's seems to lean more towards the negative side of things. Although, he would be the best one to send a warning to, I think.

Do you have an idea of what kind of warning it may be?