Tamako runs a small souvenier shop at the Yoka Hot Springs. She has a high flare for netbattling, as does her net navi Metalman. If she notices that one of her customers has a PET, she'll challange him or her to a net battle. If they win, all their souveniers will be free! However if they lose, they must be everything that she picks out for them. Obviously, Tamako is very confident in her navi and net battling skills.
Source: Rockman.exe Online