In a world where humans and demi-humans life together and both populations are declining, humans deemed "supporters" assist various races once they reach an age of maturity. With matchmaking automated and pairings a mystery, a teacher is surprised when his match is not only an elf princess, but also his own student!

(Source: Fakku)

1. Enjo Kouhai (援助交配); Comic Market 91
2. Enjo Kouhai 2 (援助交配2); Comic1☆11
3. Enjo Kouhai 3 (援助交配3); Comic Market 92
4. Enjo Kouhai 4 (援助交配4); Comic Market 93
5. Enjo Kouhai 5 (援助交配5); Comic1☆13
6. Enjo Kouhai 6 (援助交配6); Comic Market 94
7. Enjo Kouhai 7 (援助交配7); Comic Market 95
8. Enjo Kouhai 8 (援助交配8); Comic Market 96
9. Enjo Kouhai 9 (援助交配9); Comic Market 97
10. Enjo Kouhai 10 (援助交配10); Comic Market 98
11. Enjo Kouhai 11 (援助交配10); Sunshine Creation 2021 Summer
12. Enjo Kouhai 12 (援助交配10); Comic Market 99

Notes:
- Includes 7 extra chapters