You can jumpstart your "farm" by using these active codes found on the Anime Simulator Wiki and related sources:

: Reward varies by version, often providing starting coins or gems. ANIME MERGE Simulator! (Roblox)

: Claims rewards from tasks and collects dropped items or gems. Legitimate Native Features

: Combines lower-tier units into stronger ones without manual clicking.

: Found in the game settings or upgrade menu; it combines units automatically, though it may be slower than a script.