Momo Asakura, a popular female voice actress who has appeared in numerous works, presents a long-awaited best album that kicks off the year marking her 10th anniversary as a solo artist. Having raced through the 10th-anniversary year of TrySail, the group she belongs to, her own 10th-anniversary activities finally begin with this best album. The title "relier" is French for "to bind, to connect," representing the fans who have supported her and the irreplaceable encounters she has had.