@me474 lol... You really didnt get my point through, eh?
I
(and probably most of the reader too) saw 'it' or 'him' as a cute lil shizu regardless of its former gender as satoru mikami or the current genderless slime... nothing more, nothing sexual... Because thats the way the mangaka depicted it/him/she/they... Just like that, period... That why its relative depends on each own discretion...
Now tell me, regardless of its former gender as satoru mikami, do you see it/he/she/they as a male?
Instinctively and instantly, you'll depict it/he/she/they as a cute 'female' lil shizu, right? (Regardless of its former gender)... It is known as preconception...
And mind you, traps is not always gay... Appearances can be deceiving but do not mistake it as an undeniable truth... There are some that born with different constitution in contrast with their gender also its really rude, unwise, and vulgar to just blatantly accusing people with different constitution; in this case feminine male as gay and masculine female as fags...