BBM listed a new Lions set on their website today. It's a 28 card box set that features 9 of the Lions "popular young players". Looks like there's three separate styles of cards in the set - an "expression" subset, a home uniform subset and an away uniform subset. Each player has a card in each of the subsets - that adds up to 27 cards. The 28th card is an insert card.
I suspect that if Yusei Kikuchi had signed with another team other than the Lions, there'd be a box set for that team instead.
Anyway, the set will be released in late March.