Love it~ it reminds me of this one https://www.mangago.me/read-manga/ore_no_joshiga_eritowano_nie_tare_kawaii/
Cute boss and cool subordinate that takes care of him when he gets small, tho this one is more explicit with the BL. Hope he gets bigger eventually or it'll be hella weird lol
Here after re-reading this manga for the third time and just love. I know people are upset about the ending but, let's be honest, a cliche romantic ending would have just makes as cringe XD and ranma confession was hella worth it.
Also, for the new ones, ignore the harem tag, it's isn't, it's just coz many people like akane and ranma but both are crazy for each other.