Focusing on the "Time Machine" plotline requires specific items across seven Sundays, such as coffee cans ($200), flowers ($1,000), and diamond rings ($5,000).

The game revolves around a daily cycle where you have to invest in activities. Managing three primary stats is essential for relationship progression:

Progressing her story often requires helping with her specific needs and balancing energy between her and other girls like Tomoko. Critical "UPD Fixed" Progression Tips

To achieve the "Hentai Ending," you must visit the theater every Saturday with specific prerequisites, such as having 125 Knowledge by the first week and Tomoko as a girlfriend by the third.

Boosted by winning swim races or engaging in intimate encounters. You generally need at least 200 Charm for high-level interactions.

Drug dealing jobs are the most efficient way to gain money ($2,000+ needed for Love Hotels) while also providing charm. Sim Girls: Tomoko Saeki Guide | PDF - Scribd