Otoko Yamome Mo Hana ha Saku
A super wholesome age gap romance! No sex in this one. It's similar to one of the side stories in Classmates, in that the older one is a dad and reconnects with his daughter. It's very sweet!
Machigitsune to Hito no Ko
Cute! Read this one before.
The Dreaming Trainer’s Ideal Master
First story is a slave auction trope, surprisingly tame and wholesome bc the MC quickly becomes the secretary of their buyer and they become proper lovers instead of slave/master. Second story is a chance meeting between a d delinquent and a salaryman, with the delinquent being a gap moe bottom. Salaryman transforms himself into a hot guy out of love (and exercise, and a haircut, and a more outgoing attitude), and they live happily ever after.
Complex Jijou
Haha, the gap moe is strong! Two scary faced guys trip headfirst into romance. Not as good as the one about the unrequited friends with benefits, but still solidly entertaining, and not full of frustrating will they/won't they tropes.
Ai mo Kawarazu
Interesting, a college/high school romance that actually makes sense. Chdhood friends with a small age gap that won't matter the older they get.
Ai da, Koi dano Shouhosen
Very interesting omegaverse, basically a grounded take on the trope. Huh, 6.5 and it's over?! I guess that's normal, but it felt like it was going to be longer haha. Ah, comments say there's a Vol 2. That makes more sense.
Koi da Ai da wa Sateoite
Oh yes, I loved this SO MUCH. the affection, the backwards relationship arc, the art, all of it. Chef's kiss. Straight to the favorites list!! Re-read: the eye contact in the last chapter, augh
R-40 BL
Huh... What a odd one shot. It knows exactly what it is and how blurred the lines are with the 'beast' character, so the questionable age gap doesn't feel particularly exploitative.
Mitsuya Sensei no Keikakuteki na Edzuke
EXCEEDINGLY WHOLESOME!! A bit like Old Fashioned Cupcake, and a super sweet slice of life. There is no sex here, just a wholesome relationship!)
Shachou, Koibito no Furi wo shite Watashi no Chichi ni Atte kudasai