Updated September 2026: the affinity numbers in this guide have been refreshed with data extracted from the game files (v1.15). The affinity cap is now Lv. 99 and the cost curve beyond Lv. 30 was rebalanced by the developers.
Understanding Affinity
Each character in Stella Sora has an Affinity system, which you can find on their individual character pages. Affinity functions similarly to intimacy or a personal bond with your character.
What makes this system particularly important is that affinity actually improves your character's damage and HP. The stat increases are quite significant and well worth investing in. However, maxing out a single character requires considerable time and resources, so planning ahead is essential.
The level cap has grown over time: version 1.6 raised it from 50 to 67, and version 1.10 raised it again from 67 to 99, where it stands today. Keep in mind that flat ATK and HP stats stop growing at Lv. 50, and levels 51 to 99 grant no further stats at all.
The Gift System
Currently, only 3 star and 4 star gifts are available. These provide a modest amount of affinity points and can be obtained by crafting or purchasing from the event shop. The main limitation is that you can only give 10 gifts per day across all characters.
This restriction means you need to plan carefully to maximize your benefits without turning the game into a chore. This guide will help you do exactly that.
Gift Point Values
Each gift provides different points based on its rarity and whether the character loves, tolerates, or hates it.
| Rarity | Loved (+50%) | Neutral | Hated (-20%) |
|---|---|---|---|
| 3 Star | 225 | 150 | 120 |
| 4 Star | 750 | 500 | 400 |
| 5 Star | 3,000 | 2,000 | 1,600 |
Each character has specific gifts they love, which we have detailed on our Character Gifts page.
Matching the right gift to the right character is crucial because it increases points earned by 50%. Since you are limited to 10 gifts per day, always use the highest quality gifts available. Currently, that means 4 star gifts.
To illustrate the difference: giving 10 loved 4 star gifts yields 7,500 points. Once 5 star gifts become available, just 3 loved 5 star gifts will provide 9,000 points. The efficiency jump is substantial.
The 5 Star Gift Question
The main issue is that 5 star gifts are not yet available in the game. We also know that 4 star gifts will be required to craft 5 star gifts, though the exact conversion rate remains unknown.
This raises an important question: should you save your 4 star gifts for future 5 star crafting, or use them now?
Our recommendation is to use them now. We have no timeline for when 5 star gifts will be released, and the immediate benefits from raising affinity will help you clear content much faster.
Recommended Target: Level 30
Level 30 offers the best cost to benefit ratio in the entire affinity system. You gain the most significant ATK and HP increases relative to the investment required.
Points Required Per Level
Total points to max (Lv. 99): 3,028,200. Each value below is the points needed to reach that level from the previous one.
| Level Range | Points Per Level | Cumulative Total |
|---|---|---|
| Lv. 1 | 100 | 100 |
| Lv. 2 | 200 | 300 |
| Lv. 3 | 300 | 600 |
| Lv. 4 | 500 | 1,100 |
| Lv. 5 | 900 | 2,000 |
| Lv. 6 to 10 | 1,000 | 7,000 |
| Lv. 11 to 15 | 2,000 | 17,000 |
| Lv. 16 to 20 | 4,000 | 37,000 |
| Lv. 21 to 25 | 8,000 | 77,000 |
| Lv. 26 to 30 | 16,000 | 157,000 |
| Lv. 31 to 35 | 19,200 | 253,000 |
| Lv. 36 to 40 | 23,000 | 368,000 |
| Lv. 41 to 45 | 27,600 | 506,000 |
| Lv. 46 to 67 | 33,100 | 1,234,200 |
| Lv. 68 to 99 | 34,100 to 85,400 | 3,028,200 |
As you can see, reaching level 99 requires over 3 million points, and the final 32 levels (the Soulmate stage added in version 1.10) alone cost nearly 1.8 million of them. These values come directly from the game's data files.
Why Level 30?
To reach level 30, you only need 157,000 points. This gets you all the ATK% bonuses at roughly 5% of the total cost to max.
Gifts Required for Level 30
| Gift Type | Gifts Needed | Days Required |
|---|---|---|
| 3 Star Loved (225 pts) | 698 gifts | 70 days |
| 3 Star Neutral (150 pts) | 1,047 gifts | 105 days |
| 3 Star Hated (120 pts) | 1,309 gifts | 131 days |
| 4 Star Loved (750 pts) | 210 gifts | 21 days |
| 4 Star Neutral (500 pts) | 314 gifts | 32 days |
| 4 Star Hated (400 pts) | 393 gifts | 40 days |
| 5 Star Loved (3,000 pts) | 53 gifts | 6 days |
| 5 Star Neutral (2,000 pts) | 79 gifts | 8 days |
| 5 Star Hated (1,600 pts) | 99 gifts | 10 days |
Stats at Level 30
| Stat | Bonus |
|---|---|
| ATK | +864 |
| HP | +8,006 |
| ATK% | +24% |
This requires a fraction of the gifts needed to max out completely. Using 4 star loved gifts, you can reach level 30 in just 21 days. For reference, flat stats finish at Lv. 50 with +1,584 ATK and +14,678 HP, which costs 671,500 points total.
Conclusion
Focus on reaching level 30 affinity using 4 star loved gifts. This target provides excellent stat bonuses at a fraction of the total investment required for max level. Check our Tier List to decide which characters are worth prioritizing. Do not hoard your 4 star gifts waiting for 5 star crafting since the immediate power boost will serve you far better right now.