Both of these Korean BL's are very character-driven stories (the story is focused on character and relationship development, rather than a plot/the story is carried forward by characters rather than plot events) about young men pursuing helping each other pursue their overlapping dreams of fame.
At first, they don't seem all that similar. However, both dramas involve 2 men who come to earth from heaven (gods in Handmade Love, deceased pets in Choco Milk Shake) with the intention of it only being temporary to fulfill their mission. The endings of the dramas are where you'll find the most similarity, with a somber sense of whimsy as they decide what to do once their missions are over, and the comradery/love they settle into.
Both of these bite-sized kdramas have a sense of magical whimsy to them. A new employee at a magical shop creates a domino effect of life lessons, guided by magic.
Both of these short minidramas center around an immortal being learning about humanity in an effort to end his curse. The dramas are composed of miniature arcs that cover 1-2 episodes (in Handmade Love, these arcs about clients he takes on. In Kiss Goblin, these arcs about each emotion he learns). The dramas have a magical sort of whimsy to them.
Both of these Taiwanese BLs take place with a crime backdrop, where one of the leads is a relatively important figure in an illegal organization and has a backstory that affects the leads' relationship to each other and the occurrence of legal consequences for actions taken. Both of these BLs also feature a second couple that steal the show in a similar confident sort of way.
Both of these Japanese BL dramas center around the sweet and innocent budding romance between two guys who start off as strangers to each other. But they bond over food and the realization that the other's presence inspires them and makes them lose their longstanding sense of lonelieness.
Both of these Japanese high school BLs center around a budding couple between a cheerful and charismatic ML who just wants a girlfriend, and their more serious and reserved classmate (childhood friend in the case of Kimi ni wa Todokanai). They also both exhibit a budding romance where the love confession of the other is carefully considered instead of outright accepted or rejected, and have similar freak outs from the cheerful lead. The plot tension largely comes into play in reference to their need to communicate.
Both of these BL romances center around childhood friends, where one has held an unrequited crush on the other since basically the beginning. It takes a while for the other to figure and find out, and for them to get over the fear of damaging their friendship, but the resultant slow development from friends to lovers is similarly sweet in both dramas.
Both of these high school japanese BLs center around a pair of friends. One that is more cheerful and charismatic, the other more serious. One of which has given up on having his gay love requited, and the other asking for time to process his confession instead of rejecting him. Theyre both very sweet and innocent romances, with a straighforward plot just focused on developing and reciprocating feelings.
Both of these BL minidramas take place at a rural resort where one of the MLs goes for a much needed break from his life in the city, and unexpectedly finds love with one of the employees there.
In both of the minidramas, one of the male leads takes a vacation to a rural resort where he meets the other ML, an employee of the resort who helps mend his heart.
Both of these Japanese BLs possess a similar style of Japanese storytelling, and tell of a couple with a really unhealthy (but fascinating to watch) relationships with a lack of communication and confidence in their standing with the other.