In addition to FBC Lerum, 61 other teams from 5 different countries played in Boys 13. They were divided into 12 different groups, whereof FBC Lerum could be found in Group 3 together with Lindome IBK, Husqvarna IK, FBC Dobruška and IK Stanstad. FBC Lerum continued to Playoff B after reaching 4:th place in Group 3. In the playoff they made it to 1/16 Final, but lost it against Capricorn IC with 2-4. In the Final, Capricorn IC won over Munka-Ljungby IBK Akademi and became the winner of Playoff B in Boys 13. FBC Lerum also participated in Boys 12 during Gothia Innebandy Cup 2018. They reached the 1/16 Final in B12 Playoff B, but lost it against Varla IBK Lila with 3-6.