Coworkers. Popularity gap. Supposedly straight top x supposedly straight bottom. Incredibly cute.
Official English release through Square Enix. Can be bought through Amazon. The official volumes are posted here. Volume 9 available in English 12/26/23.
Some chapters here not official, but all are official on Bato:
https://batotoo.com/series/80892
Series info:
https://www.mangaupdates.com/series/57ishcj/30-sai-made-doutei-da-to-mahou-tsukai-ni-nareru-rashii
1st: 7/8/22, 2nd: 7/27/22, 3rd: 10/14/22, 4th: 2/12/23, 5th: 12/6/23
Cherry Magic! Thirty Years of Virginity Can Make You a Wizard?!