“Growing up with a carpenter and a scientist for parents, Maru acquired a passion for creating gadgets at a young age. When she isn’t in her room, fiddling with tools and machinery, she sometimes does odd jobs at the local clinic. Friendly, outgoing, and ambitious, Maru would be quite a lucky match for a lowly newcomer such as yourself… Can you win her heart, or will she slip through your fingers and disappear from your life forever?”
As you walk into their house, you find Maru and Demetrius in their lab. The two of them are testing Soil samples. Maru asks you to watch a beaker as she has to go do something. While you're watching the beaker, Demetrius starts talking to you about his special little girl Maru. Demetrius states that he doesn't want anything getting in the way of Maru's future "If you know what I mean." When Maru returns, Demetrius tells Maru that he was telling you about the tests.
"Right, (character name)?"
1 - Say nothing
Both Demetrius and Maru go back to their work.
2 - Actually, your dad was being weird
Maru will ask Demetrius what (character name) is talking about. Demetrius will tell the truth and apologize for his behaviour.
(You'll lose some relation points with Demetrius if you choose this)
Two Hearts
If you encounter Maru outside her home, she will say she is thinking about gadgets she wants to work on. Speaking a second time she will say she is thinking about building Robots.
"1 - That should be easy for you"
Maru replies, "Are you sure you aren't trying to flatter me?"
"2 - You should be more realistic"
Reply Unknown
"3 - It sounds challenging"
You're right, but I love a challenge!
Four Hearts
Triggered by entering the clinic on a Tuesday or Thursday while Maru is working there. She is surprised by your entry and drops a glass beaker she is holding. Worried about Harvey's response, she asks you what she should do. The three responses below are paraphrases.
1 - Clear it up quickly, Harvey won't notice.
2 - Tell Harvey that it was [player's] fault.
3 - Tell Harvey the truth.
When Maru tells Harvey the truth, he easily forgives her and praises her for being such a good help around the clinic. Maru is happy that she was honest, but the player character has a tear above their head at the end of the event (unclear whether from sadness or relief).
When Maru blames the incident on you, Harvey scolds her saying that she shouldn't blame her problems on others. This leaves Maru feeling flustered and upset.
Six Hearts
Triggered by entering the area of the map where her house is located in the evening (Appears to be around 8-9 PM on a sunny day, based on three accounts). The scene takes you to a mountain area where Maru is using her telescope; she will look through it and then let you do so, after which you have two options when she asks: 'What did you see?'
1 - A beautiful planet.
Maru agrees with you, and comments that since you are human, both of you will be long dead before any of these stars are visited. She starts to confess something to you, but hesitates and carries on showing you stars and planets through the telescope.
2 - A cold, dark abyss.
Maru reluctantly agrees with you, and makes a comment about how small it feels to be human in a vast universe. She starts to confess something to you, but hesitates and carries on showing you stars and planets through the telescope.
Eight Hearts
Triggered by entering her house, when she is not at work. Maru will show you what it is she's been working on, and accidentally shock you in the process of testing it. You have the option of telling her that the shock barely hurt or that it was extremely painful, with the former leaving her in a slightly better mood although she remains sad that she accidentally shocked you.
Ten Hearts
Triggered by entering her house (Friday at 1PM for me). She will show you what shes been working on the past months: a functional, speaking robot, designed to help her parents when she decides to move out of the house. The robot however does not want to be a servant, thanks to the self awarness module Maru had implanted and leaves to find other synthetic life.
Maru will then ask what you think about her creation(...) and if you answer right, she will kiss you for showing interest in her passion for science.
Marriage
The player and Maru get married. This is expected to be expanded on in a future update.
Timeline
Maru's look evolved over the years the game was in development.
Here's a timeline showing how ConcernedApe's art and Maru's style changed over the years before the game was launched.