- "I want to be friends with [Mii]."
- — Mii, Tomodachi Life
A friend is a relationship in Tomodachi Collection and Tomodachi Life. When Miis become friends, they hang out with each other often, either talking to each other in their apartments, playing with different gifts, or going to different places. If two normal friends spend time with each other long enough, they could become best friends; if a Mii develops feelings for another Mii of the opposite gender, they could confess to them and begin a Sweetheart relationship. If they fight, this could cause them to stop being friends if it fails to be resolved.
If a Mii wants to befriend another Mii, it will have an orange problem icon on their apartment window. Upon entering and tapping their thought bubble, the Mii will tell the player they want to be friends with a Mii of their choice. If the player agrees, the Mii will ask the player what they should talk about to get along with them:
- Something funny
- Deep thoughts
- Something serious
Sometimes the Mii might ask the player what it should do to get along with them:
- Be flattering
- Try to listen
- Keep it brief
- Be polite
After choosing either option, a cutscene follows. The Mii will visit the other Mii's apartment, and they will talk for a few seconds. (It is hard to tell what they're saying because of the whooping sound effect they use) If the Miis befriend each other, they will wave as stars surround them, as a "ding" sound plays. The Mii will be happy afterward, with the caption "It went great!", followed by the Mii saying, "It worked! We're friends now, thanks to you!". But if they don't befriend each other, the stars won't appear, and the Mii will say "We're not quite friends yet..." afterward.
Sometimes the Mii will hear from another Mii that they want to be friends instantly. If this happens, the Mii will tell the player that they heard that Mii wants to be friends. If the player says yes, a cutscene similar to the regular befriending scene will play, only in this one, the other Mii will answer the door for the asking Mii before they talk with each other, sometimes standing in the middle of the room, watching the door, or skipping around before the Mii arrives. If they become friends, they wave as the stars appear and the "ding" plays, and the Mii will be happy afterward, saying "We're friends now!"; if they don't become friends, the Mii will say, "We didn't really click, so we didn't become friends this time." or "We're not friends yet...". The Mii who answers the door, will do things by the following personality.
Easygoing: Stands next to the door looking happy. He/she answers the door: Jumps.
Outgoing: Skips around. He/she answers the door: Waves real quickly.
Independent: Stands next to the door normally. He/she answers the door: Sticks arm out.
Confident: Stands in front of the door. He/she answers the door: Waves then sticks arm out.
Rarely, the Miis befriend each other without player request; the player can see the two Miis talking to each other outside either apartment. When befriending, they wave as the stars appear and "ding" sounds, and the caption, "[Mii 1] and [Mii 2] became friends!" appears.
At times, a Mii might want to introduce two of its friends to each other, the opposite Mii whom the first friend isn't friends with yet. When the player agrees, the Mii will ask what they should talk about to help the Miis get along:
- Small talk
- Money, baby!
After choosing an option, the Mii will invite the two Miis over and a cutscene plays. The Mii will introduce the two Miis to each other, and they will begin talking. The conversation lasts a little longer than the cutscene of a Mii making friends with someone. During the conversation, the Miis will laugh, either one laughing or everyone looking surprised before bursting into laughter, the opposite Mii will be confused, or the introducing Mii will have to help them out. At rare times, the two Miis might talk at the same time.
When the two Miis befriend each other, they wave, the stars appear as the "ding" sounds, and the third Mii will have a happy expression, saying "They became friends! It's all thanks to you!" afterward. If they don't become friends however, the Mii will say, "They didn't really hit it off..." later on.