So far, MIX reminds me most of Katsu! I don't recall any major tragedies in Katsu! I remember it as a gentle tale of young people discovering adult feelings without a lot of drama or conflict (other than sports.) That is how MIX seems so far. To add a huge amount of drama and tragedy to a Touch sequel seems like gilding the lily, especially since these kids have already suffered tragedies before the curtain opens, but only time will tell.